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The Giant of Nanoscience

Video vocabulary

body

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US / ˈbɒd.i /

UK / ˈbɑdi /

A1
  • noun
  • An object distinct from other objects
  • A group of people involved in an activity together
  • Main part of something
  • A person's physical self

efficient

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US / ɪˈfɪʃnt /

UK / ɪˈfɪʃənt /

A2
  • adjecitve
  • Able to produce results without waste

make

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US / meɪk /

UK / mek /

A1
  • noun
  • Product made by a particular company; brand
  • verb
  • To arrange or prepare something e.g. dinner
  • To get to (a place) on time
  • To gain the status of (teacher, lawyer, etc.)
  • To create something by putting things together
  • To earn a certain amount of money at a job
  • To cause or force a person to do something
  • To cause something to happen or be formed

treat

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US / tri:t /

UK / trit /

A1
  • noun
  • Something you buy for others as a surprise present
  • something that tastes good and that is not eaten often
  • verb
  • To pay for the food or enjoyment of someone else
  • To use medical methods to try to cure an illness
  • To act in a certain way toward someone

universe

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US / ˈju:nɪvɜ:s /

UK / ˈjunəˌvɚs /

B2
  • noun
  • All of space that contains planets and stars
  • Things surrounding a person, affecting their life

into

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US / 'ɪntə /

UK / ˈɪntu /

A1
  • preposition
  • Moving or going inside something
  • In the same direction as; in the direction of
  • So as to become; taking the state of

invent

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US / ɪnˈvent /

UK / ɪnˈvɛnt /

A2
  • verb
  • To create something such as a story or excuse
  • To create something useful for the first time

one

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US / wʌn /

UK / wʌn /

A1
  • pronoun
  • You; we; people in general; someone
  • The thing or person previously referred to
  • adjecitve
  • Used to refer to people generally
  • Being a strong example of (something mentioned)
  • number
  • Number 1

other

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US / 'ʌðə(r) /

UK / ˈʌðər /

A1
  • adjecitve
  • A thing different from that mentioned
  • determiner
  • (Something) else; not the first (one)
  • pronoun
  • Being the one and only thing of that category

phone

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US / fəʊn /

UK / foʊn /

A2
  • noun
  • Machine used to talk to someone who is far away
  • verb
  • To talk to someone using a telephone

revolutionize

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US / ˌrevə'lu:ʃənaɪz /

UK / revəˈluːʃəˌnaɪz /

B1
  • verb
  • To completely change so that it is much better

than

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US / ðən /

UK / ðən /

A1
  • conjunction
  • Used to compare two things that are not equal

laser

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US / ˈleɪzə(r) /

UK / ˈlezɚ /

B1
  • noun
  • Strong narrow beam of high-powered light
  • Powerful beam of light used for cutting precisely

level

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US / 'levl /

UK / ˈlɛvəl /

A2
  • adjecitve
  • (Sports) equal to another
  • Being steady and determined (e.g. a voice)
  • noun
  • Specific height of something
  • Amount of ability you have compared to others
  • Floor or deck within a building
  • Tool used to determine if something is lying flat
  • verb
  • To aim a gun at someone
  • To destroy a building; flatten an area completely
  • To make things flat or even
  • To make a score equal to another, in sports

stand

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US / stænd /

UK / stænd /

A1
  • noun
  • Effort to fight against something
  • Piece of furniture; device to hold or support
  • Place in a stadium where spectators watch
  • Table where things are sold at a fair or market
  • verb
  • To be a candidate in an election
  • To be able to accept someone, something; bear
  • To last for a long time
  • To be upright; not be sitting or lying down
  • To place something in a particular position; place
  • To be (as stated)
  • To still be valid
  • To have an opinion about something

also

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US / 'ɔ:lsəʊ /

UK / ˈɔlso /

A1
  • adverb
  • In addition; too; in a similar way

kind

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US / kaɪnd /

UK / kaɪnd /

A1
  • adjecitve
  • In a caring and helpful manner
  • friendly and considerate
  • noun
  • One type of thing

mildred

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US / maɪt /

UK / maɪt /

A1

how

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US / haʊ /

UK / haʊ /

A1
  • adjecitve
  • To what degree? in what amount?
  • adverb
  • (Used to explain the way to do something)
  • exclamation
  • For what purpose or reason?
  • (Used to ask someone or something's condition)

pave

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US / peɪv /

UK / pev /

B1
  • verb
  • To build a hard even surface for traveling on

woman

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US / ˈwʊmən /

UK / ˈwʊmən /

A1
  • noun
  • Adult female human being

year

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US / jə: /

UK / jɪr /

A1
  • noun
  • Unit of time equal to 12 months or 365 or 366 days
  • Used to refer to the age of a person

you

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US / jʊ /

UK / ju /

A1
  • pronoun
  • Person someone is speaking or writing to
  • Person or people in general

aka

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US / ˌeɪkeɪ'eɪ /

UK / ˌeɪkeɪ'eɪ /

A1
  • abbreviation
  • AKA is an acronym for Also Known as

big

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US / bɪɡ /

UK / bɪɡ /

A1
  • adjecitve
  • Popular
  • Serious
  • Large

electricity

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US / ɪˌlekˈtrɪsəti /

UK / ɪlɛkˈtrɪsɪti,ˌilɛk- /

A2
  • noun
  • Energy generated positive and negative charges

emit

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US / ɪ'mɪt /

UK / ɪˈmɪt /

B1
  • verb
  • To release or send out (a gas, etc.)

material

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US / məˈtɪəriəl /

UK / məˈtɪriəl /

A2
  • adjecitve
  • Relevant; (of evidence) important or significant
  • Belonging to the world of physical things
  • noun
  • Cloth; fabric
  • Supplies or data needed to do a certain thing
  • Substance from which a thing is made of

researcher

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US / rɪ'sɜ:tʃə(r) /

UK / rɪˈsətʃɚ /

A2
  • noun
  • Someone who works to find new facts and ideas

person

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US / 'pɜ:sn /

UK / 'pɜ:rsn /

A1
  • noun
  • Man, woman or child

receive

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US / rɪ'si:v /

UK / rɪˈsiv /

A1
  • verb
  • To get something someone has given or sent to you
  • To allow someone to become a member (of a club)
  • To welcome someone as a guest into your home
  • To respond to (e.g. news) in a particular way

molecular

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US / mə'lekjələ(r) /

UK / məˈlɛkjəlɚ /

B2
  • adjecitve
  • About or caused by molecules

stretch

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US / stretʃ /

UK / strɛtʃ /

A2
  • noun
  • Making arm, leg muscles longer to ease them
  • A consecutive row of things
  • A period of time
  • verb
  • To make your arm, leg muscles long to ease them
  • To make something bigger by pulling on it

the

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US / ðə /

UK / ðə /

A1
  • article
  • Used to refer to something already mentioned
  • Used to show there is only one of something
  • determiner
  • Used to describe all of a family

may

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US / meɪ /

UK / me /

A1
  • noun
  • 5th month of the year
  • other
  • Used to express a desire
  • Expresses permission, possibility or probability
  • Used to show that a thing could be true

this

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US / ðɪs /

UK / ðɪs /

A1
  • adjecitve
  • Used to indicate something already been discussed
  • Used to indicate something happening around now
  • adverb
  • An indication by a physical motion or gesture
  • A specific amount of
  • determiner
  • Person, thing, or idea near you
  • pronoun
  • Person, thing that has already been discussed

advance

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US / əd'vɑ:ns /

UK / ædˈvæns /

A2
  • noun
  • Forward movement by an army
  • An attempt to seduce someone
  • verb
  • (Of an army) to move forward
  • To change or improve
  • To increase in price or value
  • To move forward in a certain direction
  • To try to seduce someone

able

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US / 'eɪbl /

UK / ˈebəl /

A2
  • adjecitve
  • Skilled; good at something
  • Having the ability to do something

transport

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US / ˈtrænspɔ:t /

UK / ˈtrænspɔ:rt /

A2
  • noun
  • Very strong uncontrollable emotion, e.g. delight
  • Vehicle used to take soldiers to other places
  • verb
  • To carry things from one place to another
  • To cause to feel you are in a previous time

university

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US / ˌju:nɪ'vɜ:sətɪ /

UK / ˌjunɪˈvɜrsəti /

A1
  • noun
  • High-level educational institution; college

click

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US / klɪk /

UK / klɪk /

A1
  • noun
  • The sound a computer mouse makes when you press it
  • A short, slight, and sharp sound
  • verb
  • To work well with someone or something
  • To press a computer mouse
  • To make a short, slight, and sharp sound

differently

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US / 'dɪfrəntlɪ /

UK / ˈdɪfərəntlɪ /

A2
  • adverb
  • In another and different manner

giant

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US / 'dʒaɪənt /

UK / ˈdʒaɪənt /

A2
  • adjecitve
  • Very large, or much bigger than other things
  • noun
  • Tall, large, and powerful human-like creatures
  • Very successful, powerful person or organization

specific

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US / spəˈsɪfɪk /

UK / spɪˈsɪfɪk /

A2
  • adjecitve
  • Precise; particular; just about that thing
  • Concerning one particular thing or kind of thing

light

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US / laɪt /

UK / laɪt /

A1
  • adjecitve
  • Being bright making it easy to see; not dark
  • Being pale and lacking darkness of color
  • Not heavy; weighing only a little
  • adverb
  • Carrying few bags when traveling
  • noun
  • A source of energy that makes a room or area bright
  • Way in which something or someone is understood
  • verb
  • To cause something to burn; put a burning match to
  • To provide a way to see ahead

molecule

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US / ˈmɒlɪkju:l /

UK / ˈmɑlɪˌkjul /

B2
  • noun
  • Two or more atoms chemically combined

those

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US / ðəʊz /

UK / ðoz /

A1
  • determiner
  • The people or things we are talking about
  • pronoun
  • The objects far from the speaker

though

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US / ðəu /

UK / ðo /

A1
  • adverb
  • Although, despite the fact that

cellular

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US / 'seljələ(r) /

UK / ˈsɛljəlɚ /

B2
  • adjecitve
  • Concerning a cell of a living thing
  • (Of radio signals) functioning without wires

career

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US / kə'rɪə(r) /

UK / kəˈrɪr /

A2
  • noun
  • Particular occupation in professional life
  • verb
  • To move forward very fast and without control

foundational

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US / faʊn'deɪʃənəl /

UK / faʊn'deɪʃənəl /

C1
  • adjecitve
  • Being the base or important starting point

just

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US / dʒʌst /

UK / dʒʌst /

A1
  • adjecitve
  • Proper or appropriate; as is deserved
  • Doing or being what is right or fair
  • Legally correct; having enough evidence
  • adverb
  • Almost; nearly
  • Exactly at the time of
  • Exactly (the same as, like)

phonon

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US / /

UK / /

A1
  • noun

purpose

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US / 'pɜ:pəs /

UK / ˈpɚpəs /

A2
  • noun
  • Reason for which something is done; aim; goal

refrigerator

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US / rɪˈfrɪdʒəreɪtə(r) /

UK / rɪˈfrɪdʒəˌretɚ /

B1
  • noun
  • An electric cool box for keeping food fresh

compact

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US / 'kɒmpækt /

UK / kəmˈpækt /

B1
  • adjecitve
  • Packed closely together
  • noun
  • Small case with face powder and a mirror
  • verb
  • To pack something closely or tightly

depend

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US / dɪˈpend /

UK / dɪˈpend /

B1
  • verb
  • Be controlled or determined by (someone/something)

consume

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US / kən'sju:m /

UK / kənˈsum /

A2
  • verb
  • To eat, drink, buy or use up something
  • To take all your energy; focus the attention

astrophysic

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US / /

UK / /

A1

few

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US / fju: /

UK / fju /

A1
  • pronoun
  • Not many, a small number

incorporate

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US / ɪn'kɔ:pəreɪt /

UK / ɪnˈkɔrpəˌret /

A2
  • verb
  • To form into a company or business corporation
  • To include or involve as part of something else

individual

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US / ˌɪndɪˈvɪdʒuəl /

UK / ˌɪndəˈvɪdʒuəl /

A2
  • adjecitve
  • Made for use by one single person
  • Having a distinct manner different from others
  • noun
  • Single person, looked at separately from others

under

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US / ˈʌndə(r) /

UK / ˈʌndɚ /

A1
  • adjecitve
  • In the same place as another thing, but lower
  • adverb
  • In a lower quantity or price than expected
  • preposition
  • According to the terms of an agreement or law
  • Managed or controlled by the authority of
  • Being of a lesser quality or amount than expected
  • Influenced or affected by something or someone
  • Less or lower in age, amount, size or number

system

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US / 'sɪstəm /

UK / ˈsɪstəm /

A1
  • adjecitve
  • Working in an organized, logical way
  • noun
  • Set of organized, planned ideas that work together

amazing

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US / ə'meɪzɪŋ /

UK / ə'meɪzɪŋ /

A2
  • adjecitve
  • Surprising in a pleasing way
  • verb
  • To cause wonder; to surprise completely

charge

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US / tʃɑ:dʒ /

UK / tʃɑrdʒ /

A2
  • noun
  • An attack by running quickly toward someone
  • A price for a service or goods
  • When a battery has a certain amount of electricity
  • Amount of money you pay for a service
  • verb
  • To run quickly toward someone to attack them
  • To ask for money as a price for a service or goods
  • To put electricity in a battery
  • To give responsibility to take care of or manage
  • To state that someone has committed a crime

computer

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US / kəmˈpju:tə(r) /

UK / kəmˈpjutɚ /

A1
  • noun
  • Machine for storing data, accessing the internet

mentor

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US / 'mentɔ:(r) /

UK / 'mentɔ:r /

B2
  • noun
  • Experienced or wise person who advises others
  • verb
  • To act as an advisor or teacher to someone

soon

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US / su:n /

UK / sun /

A1
  • adverb
  • At a time not long from now

sound

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US / saʊnd /

UK / saʊnd /

A1
  • adjecitve
  • Sensible, dependable and reliable
  • Unbroken or undisturbed, as of sleep
  • Firm or solid in structure
  • Sane; not mentally ill
  • Clearly reasoned; involving sense, good judgment
  • noun
  • Unique quality that characterizes a style of music
  • Waves traveling in air or water that can be heard
  • verb
  • To seem or appear to be, from what was said
  • To say in a clear deliberate manner
  • To make a noise, e.g. to ring a bell

such

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US / sʌtʃ /

UK / sʌtʃ /

A1
  • determiner
  • Being similar to
  • (Thing) as previously stated or referred to
  • adverb
  • (Used to emphasize the quality of an adjective)

lower

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US / 'ləʊə(r) /

UK / ˈlaʊɚ, laʊr /

A2
  • adjecitve
  • In a position more near the bottom
  • verb
  • To move something downward to the ground

start

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US / stɑ:t /

UK / stɑrt /

A1
  • noun
  • First time or place that a thing exists; beginning
  • First opportunity to achieve something, e.g. a job
  • Sudden action or movement because you are scared
  • other
  • Beginning of something in place or time
  • verb
  • To do, be or happen for the first time; begin
  • To turn something on

well

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US / wel /

UK / wɛl /

A1
  • adjecitve
  • Being in a fortunate, good condition or state
  • Healthy and in good condition
  • adverb
  • In an acceptable, proper, or successful manner
  • In a complete, total, or full manner
  • A great and considerable degree
  • In a successful way, in a good or satisfactory way
  • exclamation
  • Used to begin or continue a particular statement
  • Used to show you want to start saying something
  • Used to express that you are waiting for a reply
  • You say this to change the topic of a conversation
  • Used to indicate you are making a final remark
  • noun
  • Long deep hole in the ground to get water
  • verb
  • To cause your eyes to fill with tears

atomic

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US / əˈtɒmɪk /

UK / əˈtɑ:mɪk /

B1
  • adjecitve
  • Concerning atoms

amount

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US / ə'maʊnt /

UK / əˈmaʊnt /

A1
  • noun
  • Quantity of something
  • verb
  • To add up to a certain figure

field

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US / fi:ld /

UK / fild /

A1
  • noun
  • Area of study, such as physics or biology
  • Piece of land used to grow crops/raise animals
  • Open area of land, especially without buildings
  • Grassed area where you play some sports
  • verb
  • To respond to something or answer a question
  • To catch or stop a ball during a game

crisis

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US / 'kraɪsɪs /

UK / ˈkraɪsɪs /

B1
  • noun
  • Unstable situation of extreme danger or difficulty

pencil

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US / ˈpensl /

UK / ˈpɛnsəl /

A1
  • noun
  • Something you draw pictures with, or write with

for

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US / fə(r) /

UK / fɔr,fə /

A1
  • preposition
  • Used to show the purpose, or need of something

rank

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US / ræŋk /

UK / ræŋk /

B1
  • adjecitve
  • Complete and total; very obvious
  • Growing out of control
  • (Of a smell) very bad; pungent; stinking
  • noun
  • Group of people with a certain level of status
  • Level or position, as in society/sport competition
  • A place for taxis to wait for customers
  • Row in which people stand side by side, as in army
  • verb
  • To rate or class things
  • To assign a level or status, as of importance, to
  • To put items into a sequence, e.g. of importance

spend

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US / spend /

UK / spɛnd /

A2
  • verb
  • To use money to pay for something
  • To use time in order to do something
  • To use up something completely

time

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US / taɪm /

UK / taɪm /

A1
  • noun
  • Speed at which music is played; tempo
  • Point as shown on a clock, e.g. 3 p.m
  • Number of hours, minutes needed to do something
  • Occasion when something happens
  • Period or occasion that something occurred
  • Period in history or the past
  • Something measured in minutes, hours, days, etc.
  • How long an event takes; duration
  • verb
  • To check speed at which music is performed
  • To choose a specific moment to do something
  • To measure how long an event takes, e.g. a race
  • To schedule something to occur at a specific moment

website

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US / ˈwebsaɪt /

UK / 'websaɪt /

A1
  • noun
  • Collection of webpages in one location

but

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US / bət /

UK / bʌt,bət /

A1
  • conjunction
  • Used before you say something different, opposite

ability

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US / ə'bɪlətɪ /

UK / əˈbɪlɪti /

A2
  • noun
  • The power, resources or skill to do something

fellow

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US / 'feləʊ /

UK / ˈfɛlo /

A2
  • adjecitve
  • Being of the same kind
  • noun
  • Man or a boy
  • Student paid to study and teach after college

give

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US / ɡɪv /

UK / ɡɪv /

A1
  • noun
  • Degree of flexibility in something, a material
  • verb
  • To hand over or present something to someone
  • To cause someone to have or experience something

medal

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US / 'medl /

UK / ˈmɛdl /

B1
  • noun
  • Metal award, often round, usually for courage

plain

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US / pleɪn /

UK / plen /

A1
  • adjecitve
  • Obvious; clearly so, true
  • Very simple, ordinary; not decorated; not striped
  • noun
  • Wide open area of flat, dry land

research

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US / rɪ'sɜ:tʃ /

UK / rɪˈsɚtʃ, ˈriˌsɚtʃ /

A2
  • noun
  • Study done to discover new ideas and facts
  • Work done to find or discover knowledge
  • verb
  • To study in order to discover new ideas and facts

drastically

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US / 'drɑ:stɪklɪ /

UK / ˈdræstɪkl:ɪ /

B2
  • adverb
  • In a sudden, extreme or severe manner

metallic

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US / məˈtælɪk /

UK / məˈtælɪk /

A2
  • adjecitve
  • Containing, made of or resembling a metal

potentially

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US / pə'tenʃəlɪ /

UK / pəˈtɛnʃəlɪ /

B1
  • adverb
  • That could happen or become reality

silly

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US / 'sɪlɪ /

UK / ˈsɪli /

A2
  • adjecitve
  • Careless
  • Acting funny or playfully
  • Not being serious or important

want

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US / wɔnt /

UK / wɑnt, wɔnt /

A1
  • noun
  • Something you desire or wish for
  • State or condition of poverty
  • verb
  • To desire or wish for something; hope for a thing

weight

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US / weɪt /

UK / wet /

A2
  • noun
  • How heavy something is
  • Metal object to measure how heavy something is
  • Importance, power, and influence person, thing has
  • A source of worry, sadness, or emotional stress

convert

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US / kən'vɜ:t /

UK / kənˈvɚt /

A2
  • noun
  • Person switching from one belief system to another
  • verb
  • To switch from a religion, belief etc. to another
  • To change form, character, or function to another

now

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US / naʊ /

UK / naʊ /

A1
  • adverb
  • At the present time or moment
  • Right away or in the next possible moment
  • Used to refer to something that just happened
  • Time between the present and a moment in the past
  • conjunction
  • Resulting from or because of something

pioneer

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US / ˌpaɪəˈnɪə(r) /

UK / ˌpaɪəˈnɪr /

B1
  • noun
  • Person exploring a new place or field of endeavor
  • verb
  • To begin or discover something new
  • To take part in the development of something new

structure

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US / ˈstrʌk.tʃə /

UK / ˈstrʌk.tʃɚ /

A2
  • noun
  • The way in which the parts of a system or object are arranged or organized, or a system arranged in
  • verb
  • To plan, organize, or arrange the parts of something

comparison

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US / kəmˈpærɪsn /

UK / kəmˈpærɪsən /

A2
  • noun
  • Act of comparing things

can

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US / kæn /

UK / kən,kæn /

A1
  • noun
  • A metal container for storing food
  • other
  • Able to; have the skill to; have the time to
  • verb
  • To have permission to
  • To be possible to do
  • To preserve food by sealing it in a metal container

description

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US / dɪˈskrɪpʃn /

UK / dɪˈskrɪpʃən /

A2
  • noun
  • Explanation of what something is like, looks like

content

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US / 'kɒntent /

UK / ˈkɑnˌtɛnt /

A2
  • adjecitve
  • Being happy or satisfied
  • noun
  • Information in something, e.g. book or computer

effect

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US / ɪ'fekt /

UK / ɪˈfɛkt /

A1
  • noun
  • An advantage, benefit
  • Change brought about by a cause; result

support

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US / səˈpɔ:t /

UK / səˈpɔrt, -ˈport /

A1
  • noun
  • Assistance or advice given to someone
  • Evidence that helps prove something is true
  • A thing to hold up or prevent from falling down
  • verb
  • To give assistance or advice to someone
  • To help prove or show that something is true
  • To hold up or prevent from falling down

sense

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US / sens /

UK / sɛns /

A1
  • noun
  • Certain mental feeling or emotion
  • Normal or clear state of mind
  • Meaning of a particular word, phrase or text
  • verb
  • To perceive using sight, sound, taste touch etc.
  • To recognize the presence of something

arrange

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US / əˈreɪndʒ /

UK / əˈrendʒ /

A2
  • verb
  • To write music for a particular instrument
  • To organize things or people in a particular way
  • To plan (an event) at a time and place
  • To organize events so they happen

not

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US / nɒt /

UK / nɑt /

A1
  • adverb
  • Word indicating the negative
  • (Used to form the negative of verbs)

our

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US / 'aʊə(r) /

UK / aʊr /

A1
  • determiner
  • Belonging to us

themselves

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US / ðəmˈselvz /

UK / ðɛmˈsɛlvz, ðəm- /

A1
  • pronoun
  • Reflexive form of 'they'

award

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US / ə'wɔ:d /

UK / əˈwɔrd /

A2
  • noun
  • Prize given to you because you did something well
  • verb
  • To give a prize for doing something well

compare

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US / kəm'peə(r) /

UK / kəmˈpɛr /

A1
  • verb
  • To consider how similar and different things are

laureate

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US / ˈlɒriət /

UK / ˈlɔriɪt, ˈlɑr- /

C1
  • noun
  • One who has been given great honor in their field

really

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US / ˈri:əli /

UK / ˈriəˌli, ˈrili /

A1
  • adverb
  • Used to stress something that is said; definitely
  • In a true or accurate manner
  • Very

study

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US / 'stʌdɪ /

UK / ˈstʌdi /

A1
  • noun
  • Room that a person studies or reads in
  • Piece of research
  • Topic or subject you research or learn about
  • verb
  • To focus on learning something usually at school

would

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US / wʊd /

UK / wʊd /

A1
  • other
  • Used to indicate something imagined
  • Used to ask or request something politely
  • Verb used to indicate possibility, request etc.
  • Used to indicate a preference
  • Used to indicate a reaction
  • Indicates something that occurred repeatedly
  • Used to indicate willingness or ability to do

become

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US / bɪ'kʌm /

UK / bɪˈkʌm /

A1
  • verb
  • To begin to be; grow to be; develop into
  • To be suitable for a particular job or role

feeling

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US / ˈfi:lɪŋ /

UK / ˈfilɪŋ /

A1
  • noun
  • Sensation or emotion you experience
  • verb
  • To be aware of or experience an emotion, sensation
  • To sense through direct contact; touch

insight

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US / 'ɪnsaɪt /

UK / ˈɪnˌsaɪt /

B1
  • noun
  • Power to understand people and things very well
  • Very good understanding of something

physics

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US / ˈfɪzɪks /

UK / ˈfɪzɪks /

A1
  • other
  • The study of heat, light, and energy on objects

same

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US / seɪm /

UK / sem /

A1
  • adjecitve
  • Being equal in quality and amount
  • Identical; not different
  • Not changing; constant

somebody

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US / 'sʌmbədɪ /

UK / ˈsʌmˌbɑdi, -ˌbʌdi, -bədi /

A1
  • noun
  • Important well-respected person
  • pronoun
  • Person who is not known or named

tiny

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US / 'taɪnɪ /

UK / ˈtaɪni /

A2
  • adjecitve
  • Very, very small

transform

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US / træns'fɔ:m /

UK / trænsˈfɔrm /

C2
  • verb
  • To change the shape completely in a good way

breakthrough

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US / 'breɪkθru: /

UK / ˈbrekˌθru /

B2
  • noun
  • Important discovery in doing something difficult

contain

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US / kənˈteɪn /

UK / kənˈten /

A2
  • verb
  • To keep something from spreading
  • To hold something inside something else

interact

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US / ˌɪntər'ækt /

UK / ˌɪntɚˈækt /

A2
  • verb
  • To talk or do things with each other

heat

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US / hi:t /

UK / hit /

A2
  • noun
  • State of anger, excitement, or arguing
  • Particular temperature at which to cook something
  • High temperature
  • One of series of races to find the finalists
  • Hot temperature, conditions, or weather
  • verb
  • To make hot or hotter

matter

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US / 'mætə(r) /

UK / ˈmætɚ /

A1
  • noun
  • Material all things are made of that fills space
  • Problem or reason for concern
  • verb
  • To be of great importance; to count

once

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US / wʌns /

UK / wʌns /

A1
  • adverb
  • One time; one instance
  • At a time in the past
  • conjunction
  • When; as soon as

safe

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US / seɪf /

UK / sef /

A2
  • noun
  • Metal box with a lock to keep valuable things in
  • adjecitve
  • Highly likely
  • Being out of danger

prestigious

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US / preˈstɪdʒəs /

UK / prɛˈstidʒəs, -ˈstɪdʒəs /

B2
  • adjecitve
  • Respected as being important and with high status

while

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US / waɪl /

UK / hwaɪl, waɪl /

A1
  • conjunction
  • In spite of the fact that; although
  • During the time that; at the same time
  • noun
  • Short amount of time

particle

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US / ˈpɑ:tɪkl /

UK / ˈpɑrtɪkəl /

B1
  • noun
  • Adverb or preposition that joins with a verb
  • Tiny piece or quantity of something

visit

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US / ˈvɪzɪt /

UK / ˈvɪzɪt /

A1
  • noun
  • Trip to a place for a time, usually for a reason
  • verb
  • To go to a place for a time, usually for a reason

weird

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US / wɪəd /

UK / wɪrd /

B1
  • adjecitve
  • Odd or unusual; surprising; strange

cambridge

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US / 'kæmbrɪdʒ /

UK / 'kæmbrɪdʒ /

A1
  • proper noun
  • A city in eastern England; population 116,900 (est. 2009). Cambridge University is located here.
  • A city in eastern Massachusetts, across the Charles River from Boston; population 105,596 (est. 2008

after

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US / 'ɑ:ftə(r) /

UK / ˈæftɚ /

A1
  • adverb
  • Later than another time, or behind something
  • conjunction
  • Following something before
  • preposition
  • When an event happened or time has passed

drug

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US / drʌɡ /

UK / drʌɡ /

A2
  • noun
  • Illegal substance taken for effect on the mind
  • Chemical used as a medicine
  • verb
  • To give drugs to someone to make them sleep

dimension

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US / daɪˈmenʃn /

UK / dɪˈmɛnʃən, daɪ- /

B1
  • noun
  • Number of planes (X, Y, Z axes) an object has
  • Measurement in space, e.g. length or diameter
  • Scope, extent or size of something abstract

episode

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US / 'epɪsəʊd /

UK / ˈɛpɪˌsod /

B1
  • noun
  • One separate event in a series of events
  • Show which is part of a larger story

lay

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US / leɪ /

UK / le /

A2
  • adjecitve
  • Amateur; not being a trained priest
  • verb
  • To place a bet on a game outcome
  • (Of a bird, etc.) to produce eggs from its body
  • To put or set something down in a flat position
  • To set out things on (table) to prepare for a meal

many

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US / 'menɪ /

UK / ˈmɛni /

A1
  • determiner
  • Used to refer a large number of things

partnership

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US / ˈpɑ:tnəʃɪp /

UK / ˈpɑ:rtnərʃɪp /

B1
  • noun
  • Shared business relationship with someone
  • Working with others for some purpose

nanostructure

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US / ˈnænəʊstrʌktʃə(r) /

UK / næˈnɒstrʌktʃər /

A1
  • noun

nanotube

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US / neɪnəʊtjʊb /

UK / neɪnoʊtjʊb /

A1
  • noun
  • A fullerene molecule having a cylindrical or toroidal shape

will

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US / wɪl /

UK / wɪl /

A1
  • noun
  • Desire or choice of someone
  • Document saying who gets your money when you die
  • Strong desire to do something; determination
  • Desire to do something; strong wish to do
  • other
  • Used with verbs to express the future
  • verb
  • To leave property to someone after your death
  • To use mental effort to make something happen
  • Am (is, are) likely to do
  • To influence someone to do something
  • To make something happen by strongly wanting it

certain

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US / ˈsə:tn /

UK / ˈsɚtn /

A1
  • adjecitve
  • Definite, fixed
  • Referring to an unspecified amount or quantity
  • Being sure about something; without doubt

day

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US / deɪ /

UK / de /

A1
  • noun
  • A period of 24 hours beginning at midnight
  • The period of time when it is light outside
  • Person's name

gene

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US / dʒi:n /

UK / dʒin /

B1
  • noun
  • Part of cell controlling development of a thing

third

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US / θɜ:d /

UK / θɜ:rd /

A1
  • adjecitve
  • 3rd: Number after second

area

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US / 'eərɪə /

UK / ˈɛriə /

A1
  • noun
  • Amount of measured space
  • A specific section or space; part of a region
  • A subject or field of study

carbon

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US / 'kɑ:bən /

UK / ˈkɑrbən /

B1
  • noun
  • Chemical element with an atomic number of 6

knowledge

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US / ˈnɒlɪdʒ /

UK / ˈnɑlɪdʒ /

A1
  • noun
  • Information, understanding, or skill

nickname

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US / ˈnɪkneɪm /

UK / ˈnɪkˌnem /

B2
  • noun
  • Name given by friends or family
  • verb
  • To give someone an informal name or title

plus

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US / plʌs /

UK / plʌs /

A2
  • noun
  • A benefit or advantage
  • preposition
  • In addition; add
  • In addition to; Indicates a number above
  • Having a value greater than zero

reason

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US / 'ri:zn /

UK / ˈrizən /

A1
  • noun
  • Ability to think about facts and form a judgment
  • Explanation for why something occurred or was done
  • verb
  • To think and make conclusions in a logical manner

too

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US / tu: /

UK / tu /

A1
  • adverb
  • In addition, also; with emphasis
  • Say that something is more than you want

available

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US / əˈveɪləbl /

UK / əˈveləbəl /

A1
  • adjecitve
  • Present and able to be used
  • Able to be used at a scheduled time

either

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US / ˈaɪðə(r) /

UK / ˈiðɚ, ˈaɪðɚ /

A1
  • adjecitve
  • One of two (used when there is a choice of two)
  • adverb
  • (After negative statements) likewise, in addition
  • conjunction
  • Used as the first of two connected things
  • determiner
  • Used as the first of two connected things
  • pronoun
  • The one or the other

occupy

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US / 'ɒkjʊpaɪ /

UK / ˈɑkjəˌpaɪ /

A2
  • verb
  • To enter and take control of land/property
  • To fill a time, a space, or an area
  • To live in a particular building
  • To fill someone's thoughts or make a person busy

new

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US / nju: /

UK / nu, nju /

A1
  • adjecitve
  • Not old, recently born, built or made
  • Being or doing something for the first time
  • Not felt, seen or known previously
  • Having been recently bought or obtained

nanoscience

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US / /

UK / /

A1
  • noun

residual

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US / rɪˈzɪdjuəl /

UK / rɪˈzɪdʒuəl /

B2
  • adjecitve
  • Referring to the amount left over
  • noun
  • Amount left over

production

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US / prəˈdʌkʃn /

UK / prəˈdʌkʃən, pro- /

A2
  • noun
  • Process of producing or growing food naturally
  • Process of making something on a large scale
  • Process of making a movie or TV show

small

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US / smɔ:l /

UK / smɔl /

A1
  • adjecitve
  • Little in size; not big
  • (Of letters) not written in capital letters
  • Being insignificant or minor
  • (Of a business) with few people or things; local
  • (Of voice) being soft and quiet
  • (Of a child) being young

talent

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US / 'tælənt /

UK / ˈtælənt /

B1
  • noun
  • Natural ability of a person to do something well
  • Person with a strong natural ability in something

thick

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US / θɪk /

UK / θɪk /

A2
  • adjecitve
  • Difficult to see through, as fog
  • Full of (people, etc.)
  • (Of a liquid) that moves or pours slowly
  • Stupid; not smart
  • (Of person's accent) hard to understand
  • Having a large distance between two surfaces

actually

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US / ˈæktʃuəli /

UK / ˈæktʃuəli /

A1
  • adverb
  • Used to add new (often different) information

realize

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US / 'ri:əlaɪz /

UK / ˈriəˌlaɪz /

A1
  • verb
  • To become aware of or understand mentally

use

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US / ju:s /

UK / ju:s /

A1
  • noun
  • Ability to employ something
  • Need to enable it to work
  • Permission to do something with something
  • Act of spending money
  • Operation of a machine for its function
  • verb
  • To have; to eat, drink, consume etc.
  • To need to operate or work
  • To operate a machine, e.g. a computer
  • To treat a person badly
  • To do something with, for a task or purpose

countless

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US / ˈkaʊntləs /

UK / ˈkaʊntlɪs /

B1
  • adjecitve
  • Being too many to be numbered or imagined

exactly

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US / ɪgˈzæktli /

UK / ɪɡˈzæktli /

A1
  • adverb
  • No more and no less than; precisely

sort

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US / sɔ:t /

UK / sɔrt /

A1
  • noun
  • Group or class of similar things or people
  • verb
  • To organize things by putting them into groups
  • To deal with things in an organized way

science

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US / 'saɪəns /

UK / ˈsaɪəns /

A2
  • noun
  • Study of the physical world, based on facts

soccer

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US / ˈsɒkə(r) /

UK / ˈsɑ:kə(r) /

A1
  • noun
  • Sport where players try to kick a ball into a net

add

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US / æd /

UK / æd /

A1
  • verb
  • To include as well
  • To put two things or numbers together, e.g. 2+2

discover

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US / dɪˈskʌvə(r) /

UK / dɪˈskʌvɚ /

A2
  • verb
  • To find something new that was not known before

link

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US / lɪŋk /

UK / lɪŋk /

A2
  • noun
  • Any one of the rings that are part of a chain
  • Connection between two or more things or people
  • Webpage item you click to go to another webpage
  • verb
  • To join or connect together

take

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US / teɪk /

UK / tek /

A1
  • noun
  • Filming of a single scene for TV or the movies
  • verb
  • To accept something that is offered
  • To use a method of traveling, e.g. a bus or train
  • To use a camera to make (a photo)
  • To pick up something and go away with it
  • To study a subject in school
  • To attempt to pass (an exam)
  • To require a certain amount of time, money, space

absorb

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US / əb'sɔ:b /

UK / əbˈsɔrb, -ˈzɔrb /

B1
  • verb
  • To take up all attention / energy of something
  • To take in a liquid; soak up

both

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US / bəuθ /

UK / boθ /

A1
  • determiner
  • Used to refer to two things at the same time
  • pronoun
  • Used to refer to two things at the same time

change

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US / tʃeɪndʒ /

UK / tʃendʒ /

A1
  • noun
  • Exchange of one set of clothes for another
  • Money in the form of coins instead of paper
  • Money returned after giving too much
  • Act of making or becoming something else
  • verb
  • To exchange one set of clothes for another
  • To exchange one kind of money for another
  • To replace something with another thing
  • To make or become something else
  • To go from one train, bus, etc. and go to another

hold

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US / həʊld /

UK / hold /

A1
  • noun
  • Section of a ship or plane used for storing things
  • Influence or power held over someone
  • Place of support for hands or feet when climbing
  • verb
  • To agree to keep something for someone
  • To have the capacity to support/contain something
  • To control an area and protect it from attack
  • To not allow someone to leave a place
  • To cause an event to happen at a place or time
  • To use hands or arms to carry or keep something
  • To have a specific quality or property
  • To keep an image, belief or feeling in your mind
  • To have or own something
  • To wait before being able to talk on the phone
  • To limit the movement of someone in a sport

nanomaterials

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US / /

UK / /

A1
  • noun
  • A material having particles or constituents of nanoscale dimensions, or one that is produced by nano

show

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US / ʃəʊ /

UK / ʃo /

A1
  • noun
  • False display of love, emotion or action
  • An event for displaying or promoting goods
  • Play, opera or theater production
  • Presentation that is broadcast on TV or radio
  • verb
  • To be easily seen or displayed
  • To display your emotions or feelings
  • To let someone see something; display
  • To explain or teach how something is done
  • To lead someone somewhere; point them to something
  • To prove something to be true, correct
  • To reveal or allow something to be seen

length

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US / leŋθ /

UK / leŋθ /

A2
  • noun
  • Distance from one end of a pool to the other
  • Measurement of distance or of time

possible

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US / ˈpɒsəbl /

UK / ˈpɑsəbəl /

A1
  • adjecitve
  • Being able or appropriate for a task or purpose
  • Having a chance of happening, or being true

solar

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US / 'səʊlə(r) /

UK / ˈsolɚ /

B1
  • adjecitve
  • Concerning the sun, or its heat

paper

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US / ˈpeɪpə(r) /

UK / ˈpeɪpər /

A1
  • adjecitve
  • Not existing in reality, or done infrequently
  • Made from the material that we use to make books
  • noun
  • Academic writing or a talk on a specific topic
  • Written test
  • Newspaper
  • Pages of a book are made from this

bounce

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US / baʊns /

UK / baʊns /

B1
  • noun
  • A person's energy or confidence
  • Quality causing a person's hair to appear healthy
  • verb
  • To move around energetically, playfully
  • To forcibly remove a person from a bar, nightclub
  • (Of check) to be rejected due to inadequate funds
  • To strike a surface and rapidly change direction
  • To move energetically in an up and down motion

else

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US / els /

UK / ɛls /

A1
  • adverb
  • Otherwise; if you fail to
  • (Of person place thing etc.) besides; in addition

huge

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US / hju:dʒ /

UK / hjudʒ /

A2
  • adjecitve
  • Very very large

move

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US / mu:v /

UK / muv /

A1
  • noun
  • Act of moving a playing piece in chess, etc.
  • An action; doing something
  • Step taken to achieve a goal
  • verb
  • To cause someone to have certain emotions
  • To cause something to change to a different place
  • To change where people live or a business operates
  • To take action to do or achieve something

nobel

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US / naɪ'trɒdʒənəs /

UK / naɪ'trɒdʒənəs /

A1

prize

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US / praɪz /

UK / praɪz /

A2
  • adjecitve
  • Being an excellent or valuable example of a thing
  • noun
  • Something won in a contest or given as an award
  • Something valuable that many people would like
  • verb
  • To value greatly and consider it important

their

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US / ðɛː /

UK / ðer /

A1
  • determiner
  • Belonging to them

useful

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US / ˈju:sfl /

UK / ˈjusfəl /

A1
  • adjecitve
  • That can help with a particular task

way

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US / weɪ /

UK / we /

A1
  • adverb
  • Used to emphasize the amount of something
  • noun
  • Particular aspect of something being thought about
  • One of various choices that could be made
  • Particular existing condition or state
  • (Often long) distance or length of time
  • How something is done
  • Route to go to a place
  • Small street
  • Usual behavior, emotions or habits of someone

all

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US / ɔ:l /

UK / ɔl /

A1
  • adverb
  • Completely; totally
  • determiner
  • Being every one of something
  • pronoun
  • 100% of something; the complete amount

its

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US / ɪts /

UK / ɪts /

A1
  • adjecitve
  • Referring to or belonging to ‘it’
  • determiner
  • Of something; belonging or related to something
  • other
  • Possessive form of “it”

pocket

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US / 'pɒkɪt /

UK / ˈpɑkɪt /

A2
  • adjecitve
  • (As if) small enough to fit in your pocket
  • noun
  • Small cloth bag sewn into clothing to hold things
  • Area of space
  • verb
  • To put something into your pocket
  • To take or hide something illegally

produce

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US / prə'dju:s /

UK / prəˈdus, -ˈdjus, pro- /

A1
  • noun
  • Fresh foods such as fruits and vegetables
  • verb
  • To grow something naturally
  • To make something appear
  • To manufacture something using machines
  • To control the making a movie or television show

professor

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US / prəˈfesə(r) /

UK / prəˈfɛsɚ /

A2
  • noun
  • Teacher who teaches at a college or university

who

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US / hu: /

UK / hu /

A1
  • pronoun
  • Which person
  • Used to introduce information about people

top

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US / tɒp /

UK / tɑp /

A1
  • adjecitve
  • Being good or great; excellent
  • Being the most in degree or quality
  • noun
  • Item of clothing covering shoulders to waist, hips
  • A cover or lid
  • Part (e.g. road) that is the furthest away
  • Highest or upper part or point of something
  • Best or highest status or position
  • Flat upper surface or edge of an object
  • Child's toy that spins on its point
  • Upper section or leaves of fruits and vegetables
  • Winning in a sport or contest
  • verb
  • To be higher or larger than a specific value
  • To arrive at the highest point of something
  • To put a cover or layer or over something
  • To kill; murder
  • To hold the highest position on a list
  • To be more important, successful or better than
  • To beat someone or win at a game

building

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US / ˈbɪldɪŋ /

UK / ˈbɪldɪŋ /

A1
  • noun
  • A structure with a roof and walls, e.g. a house
  • verb
  • To establish e.g. a reputation, over time
  • To construct a house, office, factory

fill

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US / fɪl /

UK / fɪl /

A1
  • noun
  • Act of filling; amount used to make something full
  • verb
  • To make something full
  • To move into all parts of an area
  • To repair a surface by adding a substance to it
  • To use (time); to do something during

old

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US / əʊld /

UK / old /

A1
  • adjecitve
  • Having existed for a long time, not young or new
  • Age of a person since birth

string

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US / strɪŋ /

UK / strɪŋ /

A2
  • noun
  • A line of connected objects
  • Thick thread; thin rope
  • verb
  • To tie or connect things together with a thread

superconductor

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US / ˈsu:pəkəndʌktə(r) /

UK / ˈsu:pərktə(r) /

C2
  • noun
  • Material allowing electrons to pass through easily

work

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US / wɜ:k /

UK / wɚk /

A1
  • adjecitve
  • Activity completed in order to make money
  • noun
  • The product of some artistic or literary endeavor
  • Everything created by an author, artist, musician
  • Activity you do in order to make money
  • Place of employment
  • Final product or result of a some labor or effort
  • verb
  • To bring into a specific state of success
  • To be functioning properly, e.g. a car
  • To do your job in your company or workplace
  • To make an effort to do something
  • To operate a machine or device

act

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US / ækt /

UK / ækt /

A1
  • noun
  • What someone did; action; behavior
  • A law or rule passed by a government we must obey
  • One of the parts that a stage play is divided into
  • verb
  • To behave in a certain way
  • To perform on a stage or in a movie

institute

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US / 'ɪnstɪtju:t /

UK / ˈɪnstɪˌtut, -ˌtjut /

A2
  • noun
  • Organization studying science, engineering etc.
  • verb
  • To start or commence doing, e.g. a business plan

human

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US / 'hju:mən /

UK / ˈhjumən /

A1
  • adjecitve
  • Concerning or characteristic of people
  • noun
  • A person; a man, woman or child

nanoparticle

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US / 'nænəʊpɑ:tɪkl /

UK / 'nænoʊpɑ:rtɪkl /

A1
  • noun

queen

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US / kwi:n /

UK / kwin /

A2
  • adjecitve
  • Big, female insect that is capable of laying eggs
  • noun
  • Person's name
  • Playing card, with the image of a queen on it
  • Piece in chess has the most freedom of movement
  • Big, female insect that is capable of laying eggs
  • Female royal ruler; the wife of a king
  • Very successful woman who is the best at something

scishow

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US / /

UK / /

A1

thank

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US / θæŋk /

UK / θæŋk /

A1
  • verb
  • To tell someone you are grateful to them

achievement

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US / əˈtʃi:vmənt /

UK / əˈtʃivmənt /

A2
  • noun
  • Something good that you have successfully done

atom

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US / 'ætəm /

UK / ˈætəm /

B1
  • noun
  • Smallest bit that matter can be broken down into

bump

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US / bʌmp /

UK / bʌmp /

B1
  • noun
  • Act or sound of one solid object hitting another
  • Raised area on any smooth surface
  • verb
  • To bounce along over a rough surface
  • To knock against with force or violence
  • To move someone to a different group, time or area

billion

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US / ˈbɪljən /

UK / ˈbɪljən /

A2
  • noun
  • Number 1,000,000,000

contribution

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US / ˌkɒntrɪˈbju:ʃn /

UK / ˌkɑ:ntrɪˈbju:ʃn /

A2
  • noun
  • Helping a cause by giving money, things, services
  • Article published in magazine or newspaper
  • Regular payments to the government for a pension

device

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US / dɪˈvaɪs /

UK / dɪˈvaɪs /

A2
  • noun
  • Object, machine, or equipment for a specific use
  • Method of doing something; a way

proverb

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US / ˈprɒvɜ:b /

UK / ˈprɑ:vɜ:rb /

B2
  • noun
  • A saying that gives advice

shoulder

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US / ˈʃəʊldə(r) /

UK / ˈʃoldɚ /

A2
  • noun
  • Part of the body where an arm attaches or joins
  • Meat that comes from an animal's upper front leg
  • Part of a shirt or coat that covers the shoulders
  • verb
  • To carry something around your neck
  • To push something using the top part of your arm
  • To accept a job or responsibility

they

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US / ðeɪ /

UK / ðe /

A1
  • pronoun
  • Two or more people, animals, or things

very

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US / 'verɪ /

UK / ˈvɛri /

A1
  • adjecitve
  • Concerning a large degree or amount
  • adverb
  • A lot; much; many
  • Used to stress or emphasize a noun

bizarre

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US / bɪˈzɑ:(r) /

UK / bɪˈzɑr /

B2
  • adjecitve
  • Odd or strange

bottom

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US / 'bɒtəm /

UK / ˈbɑtəm /

A2
  • adjecitve
  • Concerning the part under something, e.g. a vase
  • noun
  • The part of your body you sit on
  • Lowest position, often in a company or contest
  • Lowest part of something; part on which it rests
  • Lowest level, part or point of an object
  • The part under something, e.g. a vase
  • verb
  • To hit the lowest part of something

cell

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US / sel /

UK / sɛl /

A2
  • noun
  • Smallest unit of living things in biology
  • Group of people - often from a secret organization
  • Prisoner's room in a jail
  • Shortened form of 'cellphone'

delivery

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US / dɪˈlɪvəri /

UK / dɪˈlɪvəri, -ˈlɪvri /

A2
  • noun
  • Way someone acts when speaking publicly
  • Act of taking something to a person or place

cylinder

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US / ˈsɪlɪndə(r) /

UK / ˈsɪləndɚ /

B2
  • noun
  • Tube shape with flat ends

hire

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US / ˈhaɪə(r) /

UK / haɪr /

A2
  • noun
  • Short term rental of something e.g. car, phone
  • verb
  • To give a job to someone in exchange for pay
  • To give the use of something in exchange for money

mentored

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US / ˈmɛntɔːd /

UK / ˈmɛntərd /

A1
  • verb
  • To act as an advisor or teacher to someone

similarly

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US / ˈsɪmələli /

UK / ˈsɪmələrli /

A2
  • adverb
  • In a way almost the same as something else

stride

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US / straɪd /

UK / straɪd /

B1
  • noun
  • Length of a long confident step when walking
  • verb
  • To make progress on something such as a project
  • To walk with long confident steps

she

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US / ʃɪ /

UK / ʃi /

A1
  • pronoun
  • Female person or animal mentioned before
  • (Refers to female person mentioned before)

thermoelectric

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US / 'θɜ:məʊɪ'lektrɪk /

UK / ˌθɜ:moʊɪ'lektrɪk /

A1
  • adjecitve
  • Involving or resulting from thermoelectricity

solve

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US / sɒlv /

UK / sɑ:lv /

A2
  • verb
  • To figure out a way to handle a difficult problem

stay

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US / steɪ /

UK / ste /

A1
  • noun
  • Legal order to stop or delay an action
  • Strong rope or wire that supports a ship's mast
  • Period of time spent living in or visiting a place
  • verb
  • To keep trying without giving up
  • To remain in the same place and not move away
  • To spend time visiting a place or someone's home

york

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US / jɔ:k /

UK / jɔrk /

A1
  • proper noun
  • A city in northern England, on the Ouse River; population 136,900 (est. 2009).
  • A commercial and industrial city in southeastern Pennsylvania; population 40,097 (est. 2008).
  • The southwestern tip of Hayes Peninsula, on Baffin Bay in Greenland. It served as a base for US expl

clever

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US / 'klevə(r) /

UK / ˈklɛvɚ /

A1
  • adjecitve
  • Funny in a way that shows intelligence
  • Showing intelligence; quick to understand or learn

ball

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US / bɔ:l /

UK / bɔl /

A1
  • noun
  • Large dance where people dress formally
  • Small round object often used in a game or sport

place

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US / pleɪs /

UK / ples /

A1
  • noun
  • Particular location, area or region
  • verb
  • To put someone in a particular type of situation
  • To put something in a certain location or position

understanding

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US / ˌʌndəˈstændɪŋ /

UK / ˌʌndərˈstændɪŋ /

A1
  • adjecitve
  • Being sympathetic
  • noun
  • When you get the meaning correctly; comprehension
  • Knowledge about something or someone
  • verb
  • To know the meaning of language, what someone says

amazingly

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US / ə'meɪzɪŋlɪ /

UK / ə'meɪzɪŋlɪ /

B1
  • adverb
  • In a surprising and pleasing manner

behave

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US / bɪˈheɪv /

UK / bɪˈhev /

A2
  • verb
  • To act correctly
  • To act in a particular way
  • To react in a particular way in a given case

element

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US / 'elɪmənt /

UK / ˈɛləmənt /

A2
  • noun
  • Essential or particular part of something

first

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US / fɜ:st /

UK / fɚst /

A1
  • adjecitve
  • 1st; Coming before all others in time or place
  • noun
  • Something that has not happened before
  • Position of the winner of a competition

exciting

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US / ɪkˈsaɪtɪŋ /

UK / ɪkˈsaɪtɪŋ /

A2
  • adjecitve
  • Creating interest, happiness or pleasurable fear
  • verb
  • To cause a reaction; make active
  • To make someone feel happy, interested or eager

neuroscience

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US / ˈnjʊərəʊsaɪəns /

UK / ˌnʊroˈsaɪəns, ˌnjʊr- /

A1
  • noun
  • Scientific study of the nervous system

phd

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US / ˌpiː eɪtʃ ˈdiː /

UK / ˌpiː eɪtʃ ˈdiː /

C2
  • noun
  • Advanced university degree; Doctor of Philosophy

superstar

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US / 'su:pəstɑ:(r) /

UK / ˈsjupɚˌstɑr /

C2
  • noun
  • Someone who is dazzlingly skilled in any field

unbelievable

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US / ˌʌnbɪˈli:vəbl /

UK / ˌʌnbɪˈlivəbəl /

B1
  • adjecitve
  • Being very hard to believe; very great

arrangement

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US / əˈreɪndʒmənt /

UK / əˈrendʒmənt /

A2
  • noun
  • Particular design of a device
  • Piece of music written for a particular instrument
  • Group of things organized in a particular way
  • Organized plan, event for a time and place
  • Action done in order for something to happen

down

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US / daʊn /

UK / daʊn /

A1
  • adjecitve
  • Being sad, sick, or unhappy
  • Not operating, working, or functioning as expected
  • adverb
  • In a sitting or lying position
  • Towards or on the ground, floor, or bottom
  • Written or copied onto a piece of paper or book
  • noun
  • A period of play in American Football
  • The soft, smooth hairs that cover a bird's body
  • preposition
  • Along something's path, course, or direction
  • Going from a higher position to a lower position
  • verb
  • To eat or drink very quickly and without stopping

fire

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US / 'faɪə(r) /

UK / faɪr /

A1
  • noun
  • Heat and the flame produced when burning
  • Intense energy for or about something
  • verb
  • To apply heat to something to make it hard
  • To make a person leave their job; dismiss
  • To shoot a gun or weapon
  • To launch something into the sky, e.g. a rocket
  • To start working on something e.g. a project

during

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US / ˈdjʊərɪŋ /

UK / ˈdʊrɪŋ, ˈdjʊr- /

A1
  • preposition
  • At some point in the course of an event or thing

force

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US / fɔ:s /

UK / fɔrs, fors /

A1
  • noun
  • Group of persons trained for military action; army
  • Pressure; attraction
  • The use of physical strength/violence to persuade
  • verb
  • To use physical strength or violence to persuade

include

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US / ɪnˈklu:d /

UK / ɪnˈklud /

A1
  • verb
  • To make someone, something part of a group

honor

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US / 'ɒnə(r) /

UK / ˈɑnɚ /

B2
  • noun
  • Award you get for doing well; prize, title, etc.
  • Chance to do something special; privilege
  • Respect given to someone who is admired
  • Good standing a person has in a community
  • verb
  • To fulfill an agreement
  • To give an award to someone
  • To respect someone or something

hunter

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US / ˈhʌntə(r) /

UK / ˈhʌntɚ /

A2
  • noun
  • Someone who hunts animals to kill them
  • Person's name

physicist

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US / ˈfɪzɪsɪst /

UK / ˈfɪzɪsɪst /

B2
  • noun
  • Person who studies and works in physics

then

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US / ðen /

UK / ðɛn /

A1
  • adverb
  • A time that is not now
  • Following another thing in time or arrangement
  • Following on reasonably from what was just stated
  • At that time, not now

find

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US / faɪnd /

UK / faɪnd /

A1
  • noun
  • Object discovered by chance
  • Things that have been discovered from searching
  • verb
  • To become aware of something that is happening
  • To discover or meet by chance
  • To decide if someone is guilty of a crime, or not
  • To learn through study, research, or effort
  • To discover something by looking for it

energy

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US / 'enədʒɪ /

UK / ˈɛnədʒi /

A2
  • noun
  • Physical or mental strength

enough

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US / ɪˈnʌf /

UK / ɪˈnʌf /

A1
  • adjecitve
  • Sufficient to answer the need
  • adverb
  • To a satisfactory degree
  • pronoun
  • Equal to what is needed; as much as required
  • Adequate number or amount

mean

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US / mi:n /

UK / min /

A1
  • adjecitve
  • Being good at
  • Nasty; unkind
  • Not liking to spend money; cheap; stingy
  • noun
  • Average of a set of numbers
  • verb
  • To express a particular idea or thought
  • To intend to do something in particular
  • To have a particular meaning or value

partner

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US / 'pɑ:tnə(r) /

UK / ˈpɑrtnɚ /

A2
  • noun
  • One you have a business/personal relationship with
  • Someone you have personal relationship with
  • verb
  • To join with others for work or other activity

watch

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US / wɒtʃ /

UK / wɑtʃ /

A1
  • noun
  • Period of time someone is responsible for guarding
  • Device you wear on your wrist that shows the time
  • Official warning statement, e.g. of bad weather
  • verb
  • To keep in check, manage, or control something
  • To look at something for entertainment, e.g. TV
  • To guard a place or people; protect child, etc.
  • To look at carefully to work out what is happening
  • To protect and care for someone or something

about

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US / ə'baʊt /

UK / əˈbaʊt /

A1
  • adverb
  • To be ready to; going to
  • Nearly; approximately; roughly
  • Near; next to; close to
  • In every direction; in the area of
  • preposition
  • Concerning or of (a topic)

again

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US / ə'ɡen /

UK / əˈɡɛn /

A1
  • adverb
  • One more time, once more

different

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US / ˈdɪfrənt /

UK / ˈdɪfrənt /

A1
  • adjecitve
  • Not of the same kind; unlike other things

even

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US / 'i:vn /

UK / ˈivən /

A1
  • adjecitve
  • Being equal in influence, power, possibility etc.
  • Being divided equally or fairly
  • (Of teams/contest) with similar chances of success
  • Smooth, level, or regular
  • Can be divided by 2; ending in 2, 4, 6, 8, or 0
  • At a regular, equally steady manner
  • Remaining steady and unchanging
  • adverb
  • (When this is surprising) as well; too
  • (Used to compare two things/stress the difference)
  • verb
  • To make something level; to flatten
  • To make something equal

like

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US / laɪk /

UK / laɪk /

A1
  • adjecitve
  • Being equal in status or kind to something else
  • Similar; the same
  • adverb
  • For example
  • preposition
  • Used as a filler; used to ad emphasis
  • In a way similar to the way something is done
  • Such as; for example
  • verb
  • To want to
  • To find something pleasing; to prefer something

people

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US / 'pi:pl /

UK / ˈpipəl /

A1
  • noun
  • Persons sharing culture, country, background, etc.
  • Men, Women, Children

what

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US / wɒt /

UK / hwɑt, hwʌt, wɔt, wʌt,hwət, wət /

A1
  • pronoun
  • Thing or things that; the same kind as
  • Used to emphasize something you are about to say
  • adjecitve
  • Used to refer to a particular amount, or number
  • Used to place emphasis on a particular quality
  • adverb
  • To a certain degree
  • determiner
  • Question words used for asking for information
  • exclamation
  • Used to express excitement, shock, or surprise
  • Used to ask people to repeat something they said

that

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US / ðæt /

UK / ðæt, ðət /

A1
  • adjecitve
  • The person or thing being talked about
  • Used to identify something both the speakers know
  • adverb
  • Used to reinforce adjectives and adverbs
  • To such a degree
  • conjunction
  • Used to connect a noun clause
  • Used to introduce an adverbial clause
  • Used to introduce a noun clause
  • determiner
  • Used as a noun to refer to something
  • pronoun
  • Referring an object far away
  • Used to refer to the relative pronoun ‘which’

affect

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US / ə'fekt /

UK / əˈfɛkt /

A2
  • verb
  • To cause a change in something else

electron

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US / ɪˈlektrɒn /

UK / ɪˈlektrɑ:n /

B2
  • noun
  • A negatively charged particle

jiggle

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US / ˈdʒɪgl /

UK / ˈdʒɪɡəl /

A1
  • verb
  • Move to and fro

only

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US / ˈəunli /

UK / ˈonli /

A1
  • adverb
  • Just one; just that amount or thing; not more than
  • Not very important or serious
  • Just that type of thing, person
  • Short time ago; not before a certain time
  • conjunction
  • Except; but

photon

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US / ˈfəʊtɒn /

UK / ˈfoʊtɑ:n /

B2
  • noun
  • Particle with energy but no mass, electric charge

release

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US / rɪ'li:s /

UK / rɪ'li:s /

A2
  • noun
  • Act of freeing someone from a duty or burden
  • Introduction of a new product, film, book, etc.
  • Relief from sadness, suffering or trouble
  • Act of freeing from a jail, cage, prison, etc.
  • verb
  • To free someone from a responsibility or burden
  • To allow a film, music etc. to be sold/distributed
  • To allow to leave a jail, cage, etc.; let out
  • To let go of something you are holding

early

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US / ˈɜ:li /

UK / ˈɜ:rli /

A1
  • adjecitve
  • Happening or appearing before
  • adverb
  • Coming/happening before others in a time sequence
  • Happening sooner than expected

call

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US / kɔ:l /

UK / kɔl /

A1
  • noun
  • A order or request for action
  • The sound an animal makes, often when in danger
  • A correct prediction, e.g. a decision in a game
  • A short visit to a place or person
  • A decision by a referee or umpire in a game
  • verb
  • To make a request or order for action
  • (Animal) to make sounds to warn of danger
  • To announce the date of an election
  • To make a judgment about something
  • To give someone or something a name
  • To guess in advance the result or outcome
  • To visit a place or person for a short time
  • To phone someone
  • To speak, announce or shout in a loud voice

far

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US / fɑ:(r) /

UK / fɑr /

A1
  • adjecitve
  • A long way away
  • Being a long way away
  • adverb
  • To a large degree or extent

leave

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US / li:v /

UK / liv /

A1
  • noun
  • Permission to do something
  • Vacation time; time off work
  • verb
  • To go away from; depart
  • To gift property to someone after you die
  • To allow something to continue happening
  • To let something remain unused or available
  • To let something or someone remain somewhere

tube

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US / tju:b /

UK / tub,tjub /

B1
  • noun
  • Plastic or metal container for soft substances
  • Long hollow pipe used to hold or liquids or gases

reduce

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US / rɪ'dju:s /

UK / rɪˈdus, -ˈdjus /

A2
  • verb
  • To try to decrease, e.g. your weight if overweight
  • To boil a liquid until it has decreased in amount
  • To make something smaller in size, amount, level

where

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US / hwɛə /

UK / hwɛr, wɛr /

A1
  • conjunction
  • At or in the place which
  • In whatever place
  • pronoun
  • Word you use to ask the location of something

and

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US / ənd /

UK / ənd, ən,ænd /

A1
  • conjunction
  • Used to refer to two or more things
  • Plus; in addition; on top of that
  • Used to introduce an action that follows another

dozen

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US / ˈdʌzn /

UK / ˈdʌzən /

A2
  • noun
  • 12 people or things

ignore

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US / ɪɡ'nɔ:(r) /

UK / ɪɡˈnɔr, -ˈnor /

A2
  • verb
  • To not listen to, look at, or pay attention to

intro

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US / ˈɪntrəʊ /

UK / ˈɪntroʊ /

A1
  • noun
  • Opening part of a text or piece of music

lot

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US / lɒt /

UK / lɑt /

A1
  • noun
  • What happens to a person in life from chance; fate
  • A group of people seen together
  • Item for sale at an auction
  • Small area of land used for a purpose e.g. parking

millie

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US / /

UK / /

A1
  • noun
  • A young lower-class woman typified by brash and loutish behaviour.

attend

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US / əˈtend /

UK / əˈtɛnd /

B1
  • verb
  • To take care of someone in need
  • To listen or watch carefully; to concentrate
  • To be present at an event
  • To go to a place regularly

come

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US / kʌm /

UK / kʌm /

A1
  • verb
  • To arrive at a place
  • (Of mail) to be delivered
  • To move toward someone; go with someone
  • To reach a certain point or state

any

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US / 'enɪ /

UK / ˈɛni /

A1
  • adjecitve
  • One, or some, no matter which
  • pronoun
  • One (thing) of many; some

help

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US / help /

UK / hɛlp /

A1
  • noun
  • Something given to enable a person to do something
  • Assistance given to someone in need
  • Someone who makes something easier or possible
  • verb
  • To act to enable a person to do something; assist
  • To make something better or less difficult

layer

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US / ˈleiə /

UK / ˈleɚ /

B1
  • noun
  • One of several sheets of a material or object
  • verb
  • To put things one on top of another

marry

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US / 'mærɪ /

UK / ˈmæri /

A1
  • verb
  • To become the husband or wife of someone
  • To perform a marriage ceremony

pretend

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US / prɪ'tend /

UK / prɪˈtɛnd /

A2
  • verb
  • To act as if something is true when it is not

think

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US / θɪŋk /

UK / θɪŋk /

A1
  • verb
  • To have an idea about something without certainty
  • To have an idea, opinion or belief about something

college

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US / 'kɒlɪdʒ /

UK / 'kɑːlɪdʒ /

A2
  • noun
  • School or educational institution for adults

another

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US / əˈnʌðə(r) /

UK / əˈnʌðɚ /

A1
  • adjecitve
  • One more, but not this
  • determiner
  • One more added
  • pronoun
  • One more (thing)

complex

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US / 'kɒmpleks /

UK / kəmˈplɛks, ˈkɑmˌplɛks /

A2
  • adjecitve
  • Not being simple; having many parts or aspects
  • noun
  • Group of buildings all used for the same purpose
  • Psychological issue regarding self-image

presidential

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US / ˌprezɪ'denʃl /

UK / ˌprɛzɪˈdɛnʃəl /

B1
  • adjecitve
  • Concerning the president

real

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US / rɪəl /

UK / ˈriəl, ril /

A1
  • adjecitve
  • Actually existing or happening, not imagined
  • Being important or special

prise

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US / praɪz /

UK / praɪz /

C1
  • verb
  • To force a locked box, etc. open

sometimes

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US / ˈsʌmtaɪmz /

UK / ˈsʌmˌtaɪmz /

A1
  • adverb
  • Only at certain times; occasionally

warmth

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US / wɔ:mθ /

UK / wɔ:rmθ /

A1
  • noun
  • Quality of kindness, friendliness, or sincerity
  • A friendly manner
  • State of being warm but not hot or cold

enrico

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US / ɪn'rɪtʃ /

UK / ɛnˈrɪtʃ /

A1

groundwork

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US / ˈgraʊndwɜ:k /

UK / ˈɡraʊndˌwə:k /

A1
  • noun
  • Preliminary preparation as a basis or foundation

keep

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US / ki:p /

UK / kip /

A1
  • noun
  • Large, strong tower in the middle of a castle
  • Money spent on you so you can live in a place
  • verb
  • To continue doing something; not to stop
  • To stop balls going in a goal in sports
  • To not give back or return something
  • (Of food) to not spoil or not rot
  • To take possession of something to own, e.g. a pet
  • To have and continue to hold something
  • To do something that you have promised or agreed
  • To stay in a certain place or condition
  • To maintain the rules

something

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US / ˈsʌmθɪŋ /

UK / ˈsʌmθɪŋ /

A1
  • adverb
  • In some degree or measure
  • noun
  • a person or thing of some value or consequence
  • pronoun
  • Thing that is not yet known or named
  • Approximately

diamond

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US / 'daɪəmənd /

UK / ˈdaɪəmənd, ˈdaɪmənd /

A2
  • noun
  • Very hard colorless stone used in jewelry

from

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US / frəm /

UK / frʌm, frɑm,frəm /

A1
  • preposition
  • Starting at a particular place, time or level

entirely

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US / ɪnˈtaɪəli /

UK / ɪnˈtaɪərli /

A2
  • adverb
  • Wholly; completely

form

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US / fɔ:m /

UK / fɔrm /

A1
  • noun
  • Sports team or person's current winning record
  • Document you complete when making an application
  • Visible shape or style; type; kind
  • verb
  • To organize something such as a club or group
  • To develop; to come into a shape or substance
  • To make something into a particular shape

hot

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US / hɒt /

UK / hɑ:t /

A1
  • adjecitve
  • Angry or excited
  • Being very good at something
  • Having a high temperature
  • Popular and causing a great deal of excitement
  • Attractive in a sexually exciting way
  • (Of food) very spicy
  • Stolen; dangerous to buy or trade in

out

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US / aʊt /

UK / aʊt /

A1
  • adverb
  • No longer stylish (e.g. fashion)
  • Away from home, business, or the usual place
  • In a direction/movement away from inside or center
  • noun
  • Act when a batter cannot continue playing
  • verb
  • To tell people a secret

reconfigure

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US / ˌri:kənˈfɪgə(r) /

UK / ˌri:kənˈfɪgjər /

A1
  • verb

discovery

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US / dɪ'skʌvərɪ /

UK / dɪˈskʌvəri /

A2
  • noun
  • Learning something for the first time

end

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US / end /

UK / ɛnd /

A1
  • noun
  • The point where a process or activity stops
  • A point that marks the limit of something; finish
  • Goal or desired result
  • The tip, edge or limit of something
  • verb
  • To be the last part of something

chicago

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US / ʃɪ'kɑ:gəʊ, -'kɔ:- /

UK / ʃɪ'kɑ:ɡoʊˌ -'kɔ:- /

A1
  • proper noun
  • A city in northeastern Illinois, on Lake Michigan; population 2,853,114 (est. 2008). Chicago develop

could

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US / kəd /

UK / kʊd /

A1
  • other
  • Past form of 'can' to mean have ability
  • Used to ask for something politely, or to offer

know

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US / nəʊ /

UK / noʊ /

A1
  • verb
  • To be familiar with a person or place, thing
  • To feel sure or be convinced about something
  • To discover or be aware of something
  • To be able to distinguish
  • To have knowledge of things

pivot

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US / 'pɪvət /

UK / ˈpɪvət /

B2
  • noun
  • Point on which something turns or balances
  • verb
  • To turn or balance on a center point

graphite

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US / ˈgræfaɪt /

UK / ˈɡræfˌaɪt /

C1
  • noun
  • Black substance that is used in pencil lead

low

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US / ləʊ /

UK / lo /

A1
  • adjecitve
  • Having a small quantity, supply, or amount
  • Being unhappy or unpleasant in attitude
  • Not high; being near the ground, or bottom
  • (Of a voice, sound) being soft; quiet
  • noun
  • Situation of not having a lot of something

page

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US / peɪdʒ /

UK / pedʒ /

A1
  • noun
  • Person's name
  • One side of a sheet of paper
  • (Olden times) boy servant of a king or queen
  • Screen of information on an online service
  • verb
  • To call for someone via a phone or speaker

see

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US / si: /

UK / si /

A1
  • verb
  • To go on a date with someone
  • To predict whether something is, or will be true
  • To understand what someone says
  • To use your eyes to look at something
  • To visit a place often for sightseeing or pleasure
  • To visit or meet with someone
  • To find out by waiting or looking
  • To watch (a game, movie or TV show)

anytime

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US / 'enɪˌtaɪm /

UK / ˈɛniˌtaɪm /

A1
  • adverb
  • At a time you choose, it's not important when

likewise

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US / ˈlaɪkwaɪz /

UK / ˈlaɪkˌwaɪz /

B1
  • adverb
  • In addition; also; in the same way

origin

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US / ˈɒrɪdʒɪn /

UK / ˈɔrədʒɪn,ˈɑr- /

A2
  • noun
  • Point at which something begins or is created
  • Country or social group that a person comes from

process

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US / prə'ses /

UK / ˈprɑsˌɛs, ˈproˌsɛs /

A2
  • noun
  • Dealing with official forms in the way required
  • Set of changes that occur slowly and naturally
  • verb
  • To organize and use data in a computer
  • To deal with official forms in the way required
  • To prepare by treating something in a certain way
  • To adopt a set of actions that produce a result
  • To convert by putting something through a machine

with

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US / wɪð /

UK / wɪð, wɪθ /

A1
  • preposition
  • As an employee of a certain company
  • Against something or someone
  • By using something as a means
  • Due to; because of
  • Including
  • Possessing as a feature
  • Related to
  • (Of the manner/attitude by which you do something)
  • Used to express that people or things are together

break

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US / breɪk /

UK / brek /

A1
  • noun
  • Time you stop an activity before continuing
  • End of a relationship
  • An escape from a place such as a jail
  • (Lucky) advantage or benefit from something
  • Find a solution or answer to a problem or crime
  • Change in the weather
  • verb
  • To create a new record e.g. running the 100m dash
  • To form a crack in something
  • To burst or become damaged
  • To end a relationship
  • To escape from a place such as a jail
  • To train a wild animal e.g. a horse
  • To separate into pieces by force, or by dropping
  • To act against a law, rule, or promise
  • To become known suddenly, as in the news
  • To not do what you promised e.g. not keep promises
  • To solve a crime, or answer a problem
  • To stop functioning properly
  • To suddenly start, open or commence
  • To change in pitch suddenly, as in a voice
  • To fall on the shore, as in waves
  • To begin or change suddenly; the dawn or weather
  • To defeat by causing the person to lose their will

decade

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US / ˈdekeɪd /

UK / ˈdɛkˌed, dɛˈked /

B1
  • noun
  • Period of 10 years

before

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US / bɪˈfɔ:(r) /

UK / bɪˈfɔr,-ˈfor /

A1
  • adverb
  • At a time earlier than the present; previously
  • conjunction
  • In advance of something happening
  • preposition
  • In front of someone or something

almost

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US / 'ɔ:lməʊst /

UK / ˈɔlˌmost, ɔlˈmost /

A1
  • adverb
  • Only a little less than, nearly, not quite

have

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US / həv /

UK / hæv /

A1
  • verb
  • To drink, smoke, eat or use something
  • To experience the effects of something
  • To organize an event, or join in an activity
  • To own, possess, or hold something
  • To cause to happen or produce a particular effect

transfer

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US / træns'fɜ:(r) /

UK / trænsˈfɚ /

A2
  • noun
  • Moving to a different place, job, or school
  • Act of giving the right to a property to another
  • Picture that is pressed to copy it onto something
  • Use of ideas or skills in a different situation
  • Ticket allowing you to get on another plane, bus
  • verb
  • To move to a different place, job or school
  • To give someone an illness through contact
  • To give someone your right to a property
  • To move something from one place to another
  • To use ideas or skills in a different situation
  • To get off a plane, bus etc. and get on another

without

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US / wɪˈðaʊt /

UK / wɪðˈaʊt, wɪθ- /

A1
  • preposition
  • Not with; not having

away

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US / ə'weɪ /

UK / əˈwe /

A1
  • adjecitve
  • Not present
  • adverb
  • Disappear completely
  • Doing something with a lot of energy
  • Not here; far from here; in a different direction
  • To a different area, location

fundamental

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US / ˌfʌndəˈmentl /

UK / ˌfʌndəˈmɛntl /

A2
  • adjecitve
  • Forming a necessary part, base, or core
  • noun
  • A basic part of something
  • (Music) the lowest note in a harmony

hundred

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US / 'hʌndrəd /

UK / ˈhʌndrɪd /

A1
  • number
  • 100

world

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US / wɜ:ld /

UK / wɜrld /

A1
  • noun
  • All the humans, events, activities on the earth
  • Political division due to some kind of similarity

bear

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US / bɛː /

UK / bɛr /

A2
  • noun
  • Large brown animal with fur that lives in forests
  • Someone who expects stock market to fall
  • verb
  • To accept (responsibilities or duties)
  • To give birth to a child; to produce fruit
  • To accept or suffer the weight of difficulties
  • To keep moving left or right while going forward
  • To show (sign of something)
  • To support the weight of something, e.g. a bridge

freedom

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US / 'fri:dəm /

UK / ˈfridəm /

B1
  • noun
  • State of being free, not being controlled

location

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US / ləʊˈkeɪʃn /

UK / loʊˈkeɪʃn /

B1
  • noun
  • Particular position or area of place, event, etc.

scientist

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US / ˈsaɪəntɪst /

UK / ˈsaɪəntɪst /

A2
  • noun
  • Person who is trained in a science
  • Subtitles section
  • This episode was made in partnership with the Kavli Prize.
  • The Kavli Prize honors scientists for breakthroughs in astrophysics, nanoscience, and neuroscience, transforming our understanding of the big, the small, and the complex.
  • There's an old proverb in science, we make progress by standing on the shoulders of giants.
  • It means that science advances by building on the work of those who came before.
  • Sometimes, a researcher will spend their career doing important foundational work that paves the way for countless others to make exciting discoveries decades later.
  • One such giant is Mildred Dresselhaus, who in 2012 was honored with the Kavli Prize in nanoscience.
  • She didn't invent self-charging phones, improve solar cells, or make a better refrigerator, but she has made it possible for somebody else to.
  • INTRO Before she was Professor Dresselhaus, giant in the field of nanoscience, she was Millie Spivak, born in New York in 1930.
  • She attended Hunter College in New York, where her talent was recognized by her physics teacher, the future Nobel Laureate Rosalind Yalow.
  • Yalow mentored Mildred for many years.
  • Mildred then went on to study at Cambridge University and the University of Chicago under the superstar physicist Enrico Fermi.
  • In 1960, after becoming Dr. Dresselhaus, she left her PhD work on superconductors and started her pioneering work on carbon at MIT.
  • She'd married fellow physicist Gene Dresselhaus, and they chose MIT as it was the only place that would hire partners together.
  • It worked out for her, though, because she stayed there for almost 60 years, becoming the first woman to reach MIT's highest rank of institute professor.
  • During that time, she made huge strides in the study of nanomaterials, which are materials that incorporate nanoparticles, or structures that have only a few dozen or hundred atoms.
  • For comparison, a human body has about a billion, billion, billion atoms.
  • In the 1970s, Dresselhaus was one of the first people to study graphene, which is a two-dimensional form of graphite, the kind of carbon in plain old pencils.
  • It sounds bizarre to call any kind of real-life thing 2D, because the real world is 3D. But we think like this all the time.
  • Paper isn't really 2D, but we can treat it like it is.
  • We ignore its third dimension for practical purposes.
  • Likewise, graphene is only one layer of carbon atoms thick, so it makes sense to pretend it's 2D. What Dr. Dresselhaus and others worked out is that for nanomaterials like this, when their dimension changes,
  • Like from 3D to 2D, their properties can change drastically as well.
  • And she'd use that insight time and time again in her career.
  • See, carbon is a shapeshifter.
  • Diamond, graphite, and graphene are all made of carbon atoms in different arrangements, but their properties couldn't be any more different.
  • It's now known that graphene could be used to make electricity-conducting, heat-resistant plastics, next-generation transistors for computers, and lots more.
  • But Dr. Dresselhaus wasn't content with just one amazing carbon discovery.
  • So in the 1980s, she pivoted to another weird form of carbon, buckminsterfullerene, or buckyballs, if you're feeling silly.
  • These are nano-sized spheres of just 60 carbon atoms arranged like the shapes on soccer balls.
  • It's thought that they may be useful for many things, like targeted drug delivery.
  • The ball of carbon could contain molecules of a drug and release them at specific locations in the body.
  • And once again, Mildred Dresselhaus was one of the first to discover and study these tiny spheres.
  • She found them coming off of graphite when she fired lasers at it.
  • Both graphene and buckyballs would later go on to have Nobel Prizes awarded for their discoveries, and Dresselhaus laid the important groundwork for both of them.
  • Then, in the 90s, she had an idea to reduce the dimension of carbon even further, down to 1D. Her idea was to take buckyballs and stretch them out by adding more carbon atoms.
  • She worked out that if a cylinder of buckyball-like carbon structures was long enough, you could treat the tube as 1D. Its length would matter way more than its other dimensions.
  • This was the carbon nanotube, and she was one of its early pioneers in the 1990s.
  • She showed that, depending on how it's made, it can either be semiconducting or metallic.
  • Meaning that the same element that makes diamonds and pencils can potentially act like a metal, with the ability to hold up unbelievable weights without breaking.
  • For all of this, she's been nicknamed the Queen of Carbon Science.
  • But amazingly, it's not her work on carbon that earned her the Kavli Prize.
  • In the late 90s, she moved on to an entirely new research area and revolutionized that, too.
  • Her later work was on the so-called thermoelectric effect, where materials convert residual heat into electricity.
  • Once again, Dresselhaus's contribution was to realize that some materials have very different thermoelectric properties when they're made of 2D sheets or 1D strings.
  • The reason for this is that electrons in materials can only have a certain specific amount of energy, and if one energy level is occupied, no other electron can occupy it.
  • This was something her old mentor, Fermi, discovered.
  • Plus, electrons also want to have as low an energy as possible, so they'll fill all available energy levels from the bottom up.
  • But in 1D and 2D, the distribution of energy levels is different, so that when electrons fill them, it changes the properties of the material.
  • The electrons are forced to reconfigure themselves.
  • Dresselhaus showed that this could change how well the material converted heat by a factor of 10. And on top of that, she found out that being in 1D and 2D also changed how particles of heat bounced off the material.
  • Except, heat doesn't come in particle form, does it?
  • You may know that light has a fundamental particle called the photon.
  • Well, there is also a sort of quasi-particle called the phonon that acts like a particle of heat.
  • See, particles jiggle when they're hot and bump into other particles.
  • That bumping can transfer the jiggle energy, aka heat.
  • This process actually behaves very similarly to how materials emit and absorb light, by producing and consuming photons.
  • So it actually makes sense to say that materials produce and consume phonons of heat energy, too.
  • Even though they're not real particles, they simplify things and help our understanding.
  • And what Dresselhaus showed was that in 1D and 2D, electrons and phonons interact very differently compared to how they do in 3D. The phonons are affected by the lower dimension.
  • And that insight allows for the production of more efficient thermoelectric materials.
  • So while it won't exactly solve the energy crisis anytime soon, Dresselhaus' thermoelectric breakthrough could pave the way for some clever, compact, self-powered devices.
  • You may one day be able to charge your phone just from the warmth of keeping it in your pocket.
  • In 2012, Dr. Dresselhaus was the first person to be awarded an individual Kavli Prize for nanoscience.
  • It was given for her pioneering contributions to the study of phonons, electron-phonon interactions, and thermal transport in nanostructures.
  • And her career didn't even end there.
  • Dresselhaus worked well into her 80s before passing away in 2017.
  • During her amazing career, she received countless awards, including the prestigious Kavli Prize and the Presidential Medal of Freedom.
  • It's safe to say this one-in-a-millie scientist left a giant footprint in the world of the very small.
  • Thanks for watching this episode of SciShow, and thank you again to the Kavli Prize for supporting this episode.
  • The Kavli Prize in Nanoscience is awarded for outstanding achievement in advancing our understanding of atomic, molecular, and cellular structures.
  • They also award a Neuroscience and Astrophysics Prize, honoring researchers for transforming our understanding of the brain and nervous system and advancing our knowledge of the origin, evolution, and properties of the universe.
  • If you want to learn more about Dr. Dresselhaus' work, you can visit her page on the Kavli Prize website by clicking the link in the description.