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ViHart on Tetrahedral Dice - Numberphile

Video vocabulary

hart

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US / hɑ:t /

UK / hɑ:rt /

A1
  • noun
  • A male deer, especially an adult male red deer

hard

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US / hɑ:d /

UK / hɑː(r)d /

A1
  • adjecitve
  • Difficult to do; difficult to understand
  • (Of facts) not able to be misunderstood; clear
  • (Of alcohol) strong
  • Involving or requiring lots of work, effort, care
  • Being full of pain, trouble, and problems
  • Strong
  • (Of edge) clear; sharp
  • Difficult to bend, break or cut; solid
  • adverb
  • With lots of force, power, or impact

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

tetrahedral

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US / 'tetrə'hedrəl /

UK / ˌtetrə'hi:drəl /

A1
  • adjecitve

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

icosahedron

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US / ˈaɪkəsəˈhedrən /

UK / ˌaɪkosəˈhidrən /

A1
  • noun
  • Any polyhedron having twenty plane faces

again

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US / ə'ɡen /

UK / əˈɡɛn /

A1
  • adverb
  • One more time, once more

right

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US / raɪt /

UK / raɪt /

A1
  • adjecitve
  • Correct or true
  • The south side of you looking at the rising sun
  • adverb
  • Exactly in a place or time
  • Being appropriate for a particular event
  • In a straight or direct manner
  • noun
  • Something you are legally or morally allowed to do
  • Ideal of what is just and good
  • Political view based on conservatism
  • verb
  • To fix something previously wrong or unjust
  • To make upright, as a boat that has turned over

step

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US / step /

UK / stɛp /

A1
  • noun
  • Movement done as part of a particular dance
  • Distance covered by one movement of a leg; stride
  • One part or stage in a process
  • Sound made by the feet while walking; footstep
  • Flat horizontal piece that forms stairs
  • verb
  • To raise and moving the foot to put it down

each

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US / i:tʃ /

UK / itʃ /

A1
  • determiner
  • Every one of two or more things
  • pronoun
  • Per one person or thing

pointy

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US / ˈpɔɪnti /

UK / ˈpɔɪnti /

A1
  • adjecitve
  • Being sharp in shape

platonic

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US / pləˈtɒnɪk /

UK / pləˈtɑnɪk, ple- /

C1
  • adjecitve
  • Purely spiritual; as friends only; not sexual

get

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US / ɡet /

UK / ɡɛt /

A1
  • verb
  • To become affected by illness or disease
  • To begin to feel or understand an emotion or idea
  • To send or bring someone or something home, etc.
  • To go somewhere to obtain something
  • To (cause to) do a particular thing
  • To obtain, receive or be given something
  • To currently have
  • To prepare for use
  • To understand something being said or read

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

caltrop

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US / 'kæltrəp /

UK / 'kæltrəp /

A1
  • other
  • Tropical annual procumbent poisonous subshrub having fruit that splits into five spiny nutlets; seri

number

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US / ˈnʌmbə(r) /

UK / ˈnʌmbɚ /

A1
  • noun
  • Symbols such as 1, 2, 56, 793
  • Particular song or dance performed during a show
  • Total quantity or amount of things
  • verb
  • To put numbers on things
  • To assign a sequence within a group, series, set
  • To claim to be part of a larger group, series, set

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’

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

element

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US / 'elɪmənt /

UK / ˈɛləmənt /

A2
  • noun
  • Essential or particular part of something

superiority

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US / su:ˌpɪəriˈɒrəti /

UK / suːˌpɪriˈɔːrəti /

B1
  • noun
  • Quality of being more effective, skillful etc.
  • Belief that you are better than others; pride

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)

hand

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US / hænd /

UK / hænd /

A1
  • noun
  • Cards given to a player in a card game
  • Piece of a clock that points to the time
  • Someone who performs physical tasks or work
  • Body part at the end of a person's arm
  • Help for someone performing a particular action
  • Condition of having power or influence
  • Member of the crew of a ship
  • verb
  • To give something to someone personally

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

weak

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US / wi:k /

UK / wik /

A1
  • adjecitve
  • Not having a strong character
  • Less valuable compared to money of other countries
  • Ineffective; unconvincing; not strong
  • Having little power or ability
  • Not having the necessary or proper amount
  • Having little power; not strong; easy to break
  • (Of a drink) having lots of water and little taste

next

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US / nekst /

UK / nɛkst /

A1
  • adverb
  • The one that follows another in time or order
  • At a time or place directly after the present one
  • noun
  • The one that follows after
  • adjecitve
  • Immediately after the previous one
  • First occurrence after the present one

intern

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US / ɪnˈtɜ:n /

UK / ɪnˈtɜ:rn /

C2
  • noun
  • Person working to get experience/train for a job
  • verb
  • To have a job as an intern
  • To imprison for Political or military reasons

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

almost

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US / 'ɔ:lməʊst /

UK / ˈɔlˌmost, ɔlˈmost /

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

dangerous

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US / ˈdeɪndʒərəs /

UK / ˈdendʒərəs /

A1
  • adjecitve
  • Involving the chance of hurt or damage; risky

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

group

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US / ɡru:p /

UK / ɡrup /

A1
  • noun
  • Two or more musicians who play music together
  • Number of people or things gathered together
  • verb
  • To combine or collect objects or people together

accidentally

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US / ˌæksɪ'dentəlɪ /

UK / ˌæksɪ'dentəlɪ /

A2
  • adverb
  • Unexpectedly; by mistake

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

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

six

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US / sɪks /

UK / sɪks /

A1
  • number
  • 6

foot

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US / fʊt /

UK / fʊt /

A1
  • noun
  • Base of something such as a mountain or vase
  • Length of 12 inches or about 25 cm
  • Lowest part of the leg we use to stand on

tightly

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US / ˈtaɪtli /

UK / ˈtaɪtlɪ /

A2
  • adverb
  • In a manner that doesn't allow movement

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

two

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US / tu: /

UK / tu /

A1
  • number
  • 2

press

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US / pres /

UK / prɛs /

A2
  • noun
  • Machine using pressure to shape, flatten, squeeze
  • General term for TV, radio, newspapers
  • A machine that prints books and newspapers
  • verb
  • To make clothes smooth using a heated iron; iron
  • To repeatedly ask someone to do something
  • To print something such as a book or newspaper
  • To push something against something else
  • To squeeze the liquid out of grapes, etc.

from

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US / frəm /

UK / frʌm, frɑm,frəm /

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

afternoon

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US / ˌɑ:ftəˈnu:n /

UK / ˌæftərˈnu:n /

A1
  • noun
  • Time after 12:00 and before the evening meal

superior

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US / su:'pɪərɪə(r) /

UK / sʊˈpɪriɚ /

B1
  • adjecitve
  • Better; higher quality
  • noun
  • The senior person in a monastic community
  • Person of higher rank than you

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

hey

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US / heɪ /

UK / he /

A1
  • exclamation
  • What you say when you want someone's attention

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

appropriate

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US / ə'prəʊprɪət /

UK / əˈpropriɪt /

A2
  • adjecitve
  • Right or suitable for some situation or purpose
  • verb
  • To set aside money for a specific later purpose
  • To take (money or goods) without permission

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

yahtzee

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US / /

UK / /

A1

over

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US / 'əʊvə(r) /

UK / ˈovɚ /

A1
  • adverb
  • Finished; no longer happening
  • Towards the ground/away from a standing position
  • noun
  • A set of six consecutive balls bowled in cricket
  • other
  • Finished
  • preposition
  • Showing the relation when a thing is above another
  • On or covering something
  • Above or across something
  • More than you need
  • From one side to the other
  • In the direction of; toward

mania

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US / ˈmeɪniə /

UK / ˈmeniə,ˈmenjə /

B2
  • noun
  • Mental illness marked by high energy or excitement
  • Extreme interest in, or excitement about

hurt

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US / hɜ:t /

UK / hɚt /

A1
  • noun
  • Mental, emotional, or physical pain
  • verb
  • To cause pain, damage or injury

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

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

tetrahedron

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US / ˌtetrəˈhi:drən /

UK / ˌtɛtrəˈhidrən /

A1
  • noun
  • Any polyhedron having four plane faces

our

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US / 'aʊə(r) /

UK / aʊr /

A1
  • determiner
  • Belonging to us

but

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US / bət /

UK / bʌt,bət /

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

sweep

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US / swi:p /

UK / swip /

A2
  • noun
  • Man who cleans chimneys
  • Act of cleaning a surface with a brush
  • Long, smooth movement made with your arm or a tool
  • Movement or search that covers a large area
  • verb
  • To clean something from a surface with a brush
  • To move or pass quickly and steadily
  • To search a very wide area for something

ooh

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US / u: /

UK / u /

A1
  • exclamation
  • Sound people make when they make a mistake

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

represent

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US / ˌreprɪ'zent /

UK / ˌrɛprɪˈzɛnt /

A2
  • verb
  • To depict art objects, figures, scenes; to portray
  • To show or describe something in a particular way
  • To act on behalf of others in government
  • To act or speak for another person or other people

brady

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US / ˈbrædli /

UK / ˈbrædli /

A1

dice

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US / daɪs /

UK / daɪs /

B2
  • noun
  • Game which is played using dice
  • other
  • Cubes with dots numbering 1-6 on used in games
  • verb
  • To cut food or other things into small pieces

advantage

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US / əd'vɑ:ntɪdʒ /

UK / ædˈvæntɪdʒ /

A2
  • noun
  • Thing making the chance of success higher
  • A positive point about something

not

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US / nɒt /

UK / nɑt /

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

expect

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US / ɪk'spekt /

UK / ɪkˈspɛkt /

A1
  • verb
  • To believe something is probably going to happen

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

breathe

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US / bri:ð /

UK / brið /

A2
  • verb
  • To move air into and out of your lungs
  • To say something very softly
  • To stop moving so one can rest

good

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US / ɡʊd /

UK / ɡʊd /

A1
  • adjecitve
  • Proper, appropriate or right
  • (Of an amount) enough; plenty
  • Excellent; high quality
  • Acting well or properly; of moral character
  • In a positive or happy emotional state
  • noun
  • Advantage or benefit

pick

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US / pɪk /

UK / pɪk /

A1
  • noun
  • Sharp tool used for breaking the ground
  • Item selected from a group of choices
  • verb
  • To take fruit or vegetables from a plant or tree
  • To decide on a thing from various choices; select
  • To remove (flower, etc.) with your fingers

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

yet

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US / jet /

UK / jɛt /

A1
  • adverb
  • At a later time (used after ‘not’)
  • (Used to emphasize that thing is, will be greater)
  • Eventually; at a future time
  • Until now; up to the present
  • conjunction
  • Adding to what has been said, often as a contrast

wide

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US / waɪd /

UK / waɪd /

A1
  • adjecitve
  • Having a great distance from one side to the other
  • adverb
  • Fully; completely

tiny

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US / 'taɪnɪ /

UK / ˈtaɪni /

A2
  • adjecitve
  • Very, very small

angle

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US / ˈæŋgl /

UK / ˈæŋɡəl /

B1
  • noun
  • Place where two lines or surfaces meet

table

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US / ˈteɪbl /

UK / ˈtebəl /

A1
  • noun
  • Diagram that shows data in rows and columns
  • Raised flat surface you sit at to work or eat
  • verb
  • To leave an idea to be discussed at a later date

pack

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US / pæk /

UK / pæk /

A1
  • noun
  • Bag carried on the back of donkey, etc.
  • Group of people, animals, or objects
  • verb
  • To put things in a suitcase to go on a trip
  • To crowd a place with a large amount of things
  • To put something into a container to store it

whole

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US / həul /

UK / hol /

A1
  • adjecitve
  • Complete or full; all of
  • Being in a good condition
  • noun
  • Complete amount or sum; total

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

five

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US / faɪv /

UK / faɪv /

A1
  • number
  • 5

although

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US / ɔ:lˈðəu /

UK / ɔlˈðo /

A1
  • conjunction
  • Despite the fact that; however

bad

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US / bæd /

UK / bæd /

A1
  • adjecitve
  • Not good; wrong
  • Lacking in good morals; evil
  • No longer fresh; spoiled

easily

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US / ˈi:zəli /

UK / ˈizəli /

A1
  • adverb
  • Clearly; without doubt; certainly
  • Without difficulty

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

less

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US / les /

UK / lɛs /

A1
  • adjecitve
  • Smaller in amount or degree
  • adverb
  • To a smaller degree
  • noun
  • A smaller amount
  • preposition
  • With the subtraction of

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

cube

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US / kju:b /

UK / kjub /

B2
  • noun
  • Solid object that has six square sides
  • verb
  • To cut food into the shape of small cubes
  • To multiply a number by itself three times

natural

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US / ˈnætʃərəl /

UK / ˈnætʃərəl, ˈnætʃrəl /

A1
  • adjecitve
  • Being as one would expect; being usual or normal
  • Not made by humans; without human intervention

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

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

nightmare

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US / ˈnaɪtmeə(r) /

UK / ˈnaɪtˌmɛr /

A2
  • noun
  • Frightening, difficult or displeasing experience
  • Frightening or upsetting dream while sleeping

fit

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US / fɪt /

UK / fɪt /

A2
  • adjecitve
  • Good looking; physically attractive
  • Proper or acceptable; morally or socially correct
  • noun
  • Sudden loss of body control; attack (of crying)
  • verb
  • To install a machine, equipment etc.
  • To adjust or change to the right size or shape
  • To be the right size and shape that you want

play

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US / pleɪ /

UK / pleɪ /

A1
  • noun
  • Loose, free movement between two objects
  • Single action in a sports game
  • Performance in which people act in a theater
  • verb
  • To act as a character in a movie, or on stage
  • To perform music on an instrument
  • To use a device, e.g. a video game
  • To do something for enjoyment and fun
  • To do or perform a game or sport

you

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US / jʊ /

UK / ju /

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

little

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US / 'lɪtl /

UK / ˈlɪtl /

A1
  • adjecitve
  • Being short in length of time
  • Not great in size, amount, or degree; small
  • Being very young or younger than others
  • adverb
  • By an amount or degree that is not very much
  • Not often; rarely
  • noun
  • A person's name

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

might

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US / maɪt /

UK / maɪt /

A1
  • other
  • Used to politely request an action
  • Used to express that something could happen
  • Power, strength, force or influence

than

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US / ðən /

UK / ðən /

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

man

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US / mæn /

UK / mæn /

A1
  • noun
  • Humans in general, including male and female
  • An adult male human being
  • Male who acts in a masculine way; not like a woman
  • verb
  • To control or operate (a machine); be in charge of
  • To operate a machine (a boat, etc.)

also

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US / 'ɔ:lsəʊ /

UK / ˈɔlso /

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

opposite

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US / ˈɔpəzit /

UK / ˈɑpəzɪt /

A2
  • adjecitve
  • Being totally different from
  • noun
  • Person, thing that is totally different to another
  • preposition
  • Across from or on the side facing something

figure

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US / ˈfiɡə /

UK / ˈfɪɡjɚ /

A1
  • noun
  • Your body shape
  • Numbers in a calculation
  • Doll-like thing meant to represent a person
  • Picture or diagram giving information in a text
  • Person who is very important or famous
  • Shape of a person seen indistinctly or in outline
  • Amount that is expressed in numbers
  • verb
  • To appear in a game, play or event
  • To calculate how much something will cost
  • To understand after thinking; work out

lonely

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US / ˈləʊnli /

UK / ˈloʊnli /

B2
  • adjecitve
  • Sad because apart from other people
  • Being far away and rarely visited by people

throw

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US / θrəʊ /

UK / θroʊ /

A1
  • noun
  • Arm movement to make a thing fly through the air
  • Loose cloth or blanket (usually over a chair)
  • Forcibly putting someone on the ground
  • verb
  • To use your arm to make something fly in the air
  • To move part of your body suddenly and forcefully
  • To confuse or upset someone
  • (E.g. judo) to forcibly put someone on the ground
  • To put something somewhere suddenly and roughly

defense

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US / dɪ'fens /

UK / dɪˈfɛns /

B1
  • noun
  • Argument in support of something
  • The process of protecting something from attack
  • Part of a team that prevents others from scoring

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

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

they

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US / ðeɪ /

UK / ðe /

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

nice

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US / naɪs /

UK / naɪs /

A1
  • adjecitve
  • Being attractive or of high quality or value
  • Good or enjoyable
  • Being kind or friendly

space

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US / speɪs /

UK / spes /

A1
  • noun
  • Empty area kept for a specific reason, like a car
  • Empty area with nothing in it
  • Area in the sky where the stars are
  • Area between written words on a page
  • verb
  • To make a certain distance or time between

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

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

plato

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US / ˈpleɪtəʊ /

UK / ˈpleɪtoʊ /

A1
  • proper noun
  • (c.429–c.347 BC), Greek philosopher. A disciple of Socrates and the teacher of Aristotle, he founded

chance

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US / tʃɑ:ns /

UK / tʃæns /

A1
  • adjecitve
  • Happening by luck; not planned
  • Taking a risk to try something
  • noun
  • The way something happens without planning
  • An opportunity; favorable circumstances, situation
  • The possibility that something will happen
  • verb
  • To occur just through luck; happen
  • To take a risk to try something

look

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US / lʊk /

UK / lʊk /

A1
  • noun
  • Person's beauty or physical attractiveness
  • Particular style of dress, clothes, or appearance
  • The way someone, something appears to be
  • Act of searching for or examining something
  • verb
  • To appear to be; seem

whereas

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US / ˌweərˈæz /

UK / hwɛrˈæz, wɛr- /

A2
  • conjunction
  • Taking into consideration the fact that

design

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US / dɪˈzaɪn /

UK / dɪˈzaɪn /

A1
  • noun
  • The way something is planned, to fulfill a purpose
  • verb
  • To plan in a particular way to fulfill a purpose
  • To think of a plan

sharp

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US / ʃɑ:p /

UK / ʃɑrp /

A2
  • adjecitve
  • Being very clear and easy to see
  • (Of clothes) nicely or stylishly
  • Being able to think, see, or understand quickly
  • Having a thin edge or point that is able to cut
  • Requiring a quick or sudden change in direction
  • Having a flavor that is very strong and distinct
  • adverb
  • At precisely the time given
  • Suddenly; immediately (of directions)
  • noun
  • Person's name
  • A musical tone

land

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US / lænd /

UK / lænd /

A1
  • noun
  • Region or country
  • Earth; the ground
  • verb
  • To arrive or cause a boat to arrive at the shore
  • To obtain or get something that you wanted
  • To (cause to) come down to the ground safely
  • To cause to arrive in a specific place or state

counter

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US / 'kaʊntə(r) /

UK / ˈkaʊntɚ /

B1
  • noun
  • A point in a discussion that puts an opposite view
  • A narrow table top for serving/preparing food
  • Person or device that adds the number of things
  • A token or flat piece used in games
  • prefix
  • Being opposite or against something
  • verb
  • To say or do something in opposition or resistance
  • To try to prevent, as by making a different point

though

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US / ðəu /

UK / ðo /

A1
  • adverb
  • Although, despite the fact that

difficult

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US / 'dɪfɪkəlt /

UK / ˈdɪfɪˌkʌlt, -kəlt /

A1
  • adjecitve
  • Hard; not easy; you need to work hard to do it

face

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US / feɪs /

UK / fes /

A1
  • noun
  • Side or outer surface of something
  • An expression using mouth, nose, eyes etc.
  • Front part of the head where eyes, mouth etc. are
  • Characteristics you show in public
  • verb
  • To cover a surface with something like paint
  • To deal with a problem or responsibilities
  • To look toward; point in a certain direction

earth

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US / ɜ:θ /

UK / ɚθ /

A1
  • noun
  • Wire connecting an electrical device to the ground
  • The planet we live on
  • Soil in which we grow plants

efficiently

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US / ɪ'fɪʃntlɪ /

UK / ɪˈfɪʃəntlɪ /

A2
  • adverb
  • In a way that does not create waste

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

fact

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US / fækt /

UK / fækt /

A1
  • noun
  • Something that is known or proved to be true

for

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US / fə(r) /

UK / fɔr,fə /

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

through

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US / θru: /

UK / θru /

A2
  • adjecitve
  • having finished using or doing something
  • adverb
  • From the beginning of something until the end
  • preposition
  • Over, in, across an entire thing or place
  • Allowing you to pass between, or to
  • By a particular way or process; by the use of

stable

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US / 'steɪbl /

UK / ˈstebəl /

A2
  • adjecitve
  • In a position where something does not fall over
  • Having a chemical state that is not easily changed
  • Reacting in an even way; having good mental health
  • In good condition, and not likely to deteriorate
  • noun
  • Group of racing horses that belong to one owner
  • verb
  • To put horses in a stable

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

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)

solid

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US / 'sɒlɪd /

UK / ˈsɑlɪd /

A2
  • adjecitve
  • Being able to be trusted; reliable
  • Substance that is hard or of fixed shape
  • Being well made and expected to last long
  • Having no space or emptiness inside
  • Being made entirely of one material or substance
  • noun
  • Something firm or hard; not gas or liquid

soon

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US / su:n /

UK / sun /

A1
  • adverb
  • At a time not long from now

sorry

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US / ˈsɒri /

UK / ˈsɑ:ri /

A1
  • exclamation
  • What you say to admit you were wrong
  • adjecitve
  • Causing others to feel pity; poor
  • Feeling regret or sympathy about wrong thing

much

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US / mʌtʃ /

UK / mʌtʃ /

A1
  • adjecitve
  • Very; to a high level or degree
  • adverb
  • A lot; large amount; a high degree of
  • Nearly; basically
  • On many occasions; often
  • noun
  • A large amount; a great quantity

die

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US / daɪ /

UK / daɪ /

A1
  • noun
  • Cube with dots numbering 1-6 on it used in games
  • verb
  • To cease to function or work
  • (Of a thing) to stop being used or done
  • (Of a person) to stop living

bore

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US / bɔ:(r) /

UK / bɔr, bor /

A1
  • verb
  • To accept (responsibilities or duties)
  • To give birth to a child; to produce fruit
  • To accept or suffer the weight of difficulties
  • To show (sign of something)
  • To support the weight of something, e.g. a bridge
  • To make a deep hole in the ground with a drill
  • To make someone not interested in something

suffocate

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US / ˈsʌfəkeɪt /

UK / ˈsʌfəˌket /

C1
  • verb
  • To (cause to) die from lack of air to breathe
  • To stop a thing developing, e.g. by too many rules

water

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US / 'wɔ:tə(r) /

UK / ˈwɔtɚ, ˈwɑtɚ /

A1
  • noun
  • Clear liquid that forms the seas, rivers and rain
  • Large area such as an ocean or sea
  • verb
  • (Of the eyes) to produce tears
  • (Mouth) to become wet at the thought of nice food
  • To pour liquids onto a plant to keep it alive

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

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

promise

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US / 'prɒmɪs /

UK / ˈprɑmɪs /

A1
  • verb
  • To say you will certainly do something

why

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US / waɪ /

UK / hwaɪ, waɪ /

A1
  • adverb
  • Question word to ask for a reason
  • exclamation
  • (Used to express surprise or approval)

music

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US / 'mju:zɪk /

UK / ˈmjuzɪk /

A1
  • noun
  • Sounds that are sung or played to give pleasure
  • Academic study of rhythms and sounds
  • Written symbols that represent musical sounds

try

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US / traɪ /

UK / traɪ /

A1
  • noun
  • Act of putting the ball over the rugby goal line
  • verb
  • To make an effort, to attempt to do something
  • To examine someone or something in a court of law
  • To test to see if it is good or you like it
  • To make a person go through hardship; test
  • To examine something to see if it works

lose

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US / lu:z /

UK / luz /

A1
  • verb
  • To be unable to keep in check or control something
  • To decrease in value or quantity (e.g. weight)
  • To stop having certain qualities or abilities
  • To stop having or being entitled to
  • To fail to win something that is being contested
  • To be unable to find something you once had
  • To be dependent on someone (used with 'not')

always

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US / 'ɔ:lweɪz /

UK / ˈɔlwez,-wɪz,-wiz /

A1
  • adverb
  • For a very long time
  • At all times; in every situation
  • For ever

here

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US / hɪə(r) /

UK / hɪr /

A1
  • adverb
  • In this place; at this location, position or time

perfectly

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US / ˈpɜ:fɪktli /

UK / ˈpəfɪktli /

A2
  • adverb
  • In a faultless manner; without mistakes

survival

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US / səˈvaɪvl /

UK / sɚˈvaɪvəl /

A2
  • noun
  • Act of continuing to exist when facing difficulty

busily

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US / 'bɪzɪlɪ /

UK / ˈbɪzlɪ /

A2
  • adverb
  • In a busy manner; (doing something) fast

many

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US / 'menɪ /

UK / ˈmɛni /

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

among

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US / əˈmʌŋ /

UK / əˈmʌŋ /

A1
  • preposition
  • In the center of several things

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

ever

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US / 'evə(r) /

UK / ˈɛvɚ /

A1
  • adverb
  • At any time; at all times in the future

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

actually

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US / ˈæktʃuəli /

UK / ˈæktʃuəli /

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

attack

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US / ə'tæk /

UK / əˈtæk /

A2
  • noun
  • Act intended to hurt someone physically, mentally
  • verb
  • To try to destroy, beat, or injure

four

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US / fɔ:(r) /

UK / fɔr, for /

A1
  • number
  • 4

soft

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US / sɒft /

UK / sɔft, sɑft /

A2
  • adjecitve
  • Having flowing curves rather than sharp edges
  • Easy to press, bend or cut; not hard or firm
  • Showing a sympathetic and gentle heart
  • Not rough to the touch; light in feel
  • (Of lights, music) not too bright; not too loud

guess

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US / ɡes /

UK / ɡɛs /

A1
  • noun
  • Answer given when you don't know if it is correct
  • verb
  • To give an answer without knowing if it is correct

past

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US / pɑ:st /

UK / pæst /

A2
  • adjecitve
  • No longer current or new
  • adverb
  • So as to go beyond, or further than something
  • noun
  • Time that existed before now, e.g. long ago
  • preposition
  • After a particular time
  • At a later point in distance; beyond

point

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US / pɔɪnt /

UK / pɔɪnt /

A1
  • noun
  • An item to be discussed
  • Small spot or dot
  • Fact or detail
  • Feature of something
  • The size of the text on a page or screen
  • A certain time or stage in a process
  • Certain position in time or space
  • Idea or fact you try to convince people about
  • Measurement of scores in a game, sport
  • Sharp end of something, e.g. a pen or pin
  • verb
  • To face a certain direction, e.g. north
  • To indicate something with your finger to others

should

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US / ʃʊd /

UK / ʃʊd /

A1
  • other
  • Used to indicate what is proper or reasonable

relate

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US / rɪ'leɪt /

UK / rɪˈlet /

A2
  • verb
  • To demonstrate a logical relationship between
  • To understand or sympathize with, e.g. a problem
  • To tell a story, or tell about a particular event

surround

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US / səˈraʊnd /

UK / səˈraʊnd /

A2
  • other
  • To be closely connected to and have an effect on
  • verb
  • To be all the way around something
  • To be closely connected to and have an effect on
  • To move closer on all sides of something
  • Subtitles section
  • VI HART: Yo, Brady.
  • It's Vi Hart, and as promised, I'm going throw you a Yahtzee.
  • But to make it easier, I'm going to use tetrahedral dice, but to make it harder again-- ooh, that was four out of five.
  • To make it harder again, I'm going to use six of them.
  • So you figure that out.
  • Tetrahedral dice have many survival advantages over the cubular dice, among which is that they are very difficult to pick up because they're pointy.
  • So I'm going to have to sweep them off the table.
  • They also don't roll as far as your cube dice because they have sharper angles.
  • [MUSIC PLAYING] We are at roll number 100, as you can see by the counter that I'm pressing with my foot, which means it's time-- time for your next tetrahedral superiority fact.
  • Tetrahedra are also superior to the cube in that they always end point-up.
  • They don't have the faces opposite each other, unlike a cube and, in fact, all other platonic solids.
  • When they land on the face, the other face is facing up.
  • But these have the point facing up, which means that they are dangerous as a natural defense, which is I guess why caltrops are designed as a tetrahedron.
  • They have tetrahedral points, so that when you throw them at-- they're always going to land point-up.
  • And if you stepped on one of these, it would hurt.
  • Unlike the cube, which is weak and soft.
  • [MUSIC PLAYING] We've gotten past 200.
  • Time for your next tetrahedral survival advantage fact.
  • Tetrahedra don't roll as easily as cube dice, because they have this kind of sharper angle.
  • They are less likely to accidentally get lost and lonely.
  • Moving onward.
  • [MUSIC PLAYING] All right.
  • So our 300th roll tetrahedron fact time.
  • As a platonic solid, Plato thought that the tetrahedron represented the element of fire, because one, they're pointy and they hurt you like fire hurts you, and related to the fact that they don't roll easily, unlike the icosahedron, which rolls so easily, with that very wide angle, that it rolls kind of like water does.
  • So that's what the icosahedron was water, tetrahedron was fire, and the cube, being stable and boring, is earth.
  • [MUSIC PLAYING] Oh!
  • I guess I got it.
  • Man, and here I was busily trying to think of more tetrahedron facts.
  • I did not expect to get it this soon at all.
  • I'm on 382.
  • Here I was just thinking that I should have gotten an intern to do this for me and that I was going to have nightmares of tetrahedral dice attacking me.
  • But this actually wasn't that bad.
  • And yet I don't think the chances of six four-sided dice is actually that much lower than of five cubes.
  • (SINGING) Brady, I got a Yahtzee, I got a Yahtzee.
  • Oh!
  • Two.
  • Hey, Brady, it's the number two.
  • Just for you.
  • Isn't that appropriate?
  • BRADY HARAN: Oh, oh, ooh.
  • Ah, ow!
  • VI HART: Sorry, 2.
  • But you know, you look good this way.
  • All right.
  • I guess I might as well go through some other tetrahedral dice facts, although I don't ever want to move my Yahtzee from being a Yahtzee ever again.
  • Keeping those 2s up.
  • Tetrahedra are also superior to the cube in that, well, as a survival advantage, cubes pack space.
  • So like if you have a lot of cubes, they might pack together nice and tightly like this.
  • Which you might think is a plus, because they use space very efficiently.
  • But on the other hand, if you get your cube all surrounded tightly by other cubes, the cubes might suffocate and die.
  • Whereas the tetrahedra, though they look almost like they might kind of pack space, like you can fit five of them around like this and it looks like they almost fit perfectly, but they don't.
  • There's just like a tiny little gap.
  • And this gap enables even a super-close-huddling group of tetrahedra to breathe and not suffocate.
  • I thought I was going to be in for a whole afternoon of tetrahedron mania.