AskDefine | Define cube

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Dictionary Definition

cube

Noun

1 a three-dimensional shape with six square or rectangular sides [syn: block]
2 a hexahedron with six equal squares as faces [syn: regular hexahedron]
3 the product of three equal terms [syn: third power]
4 any of several tropical American woody plants of the genus Lonchocarpus whose roots are used locally as a fish poison and commercially as a source of rotenone
5 a block in the (approximate) shape of a cube [syn: square block]

Verb

1 raise to the third power
2 cut into cubes; "cube the cheese" [syn: dice]

User Contributed Dictionary

English

Etymology 1

From cubus, from κύβος

Pronunciation

  • a RP kyo͞ob, /kjuːb/, /kju:b/
  • a US kyo͞ob, /kjub/, /kjub/
  • Rhymes: -uːb

Noun

  1. A regular polyhedron having six identical square faces.
  2. Any object more or less in the form of a cube.
    a sugar cube
    a stock cube
  3. The third power of a number, value, term or expression.
    the cube of 2 is 8
Synonyms
Hypernyms
Translations
geometry: polyhedron having of six identical square faces
  • Albanian: kub
  • Arabic:
  • Armenian: կաթսա (kat-sa)
  • Basque: kubo
  • Bosnian: kocka
  • Bulgarian: куб
  • Catalan: cub
  • Chinese:
    Mandarin: (lìfāngtǐ)
  • Croatian: kocka
  • Czech: krychle
  • Danish: kubus
  • Dutch: kubus
  • Esperanto: kubo
  • Estonian: kuup
  • Finnish: kuutio
  • French: cube
  • Georgian: კუბი (kubi)
  • German: Kubus
  • Greek: κύβος
  • Hebrew:
  • Hindi: घन
  • Hungarian: kocka
  • trreq Icelandic
  • Italian: cubo
  • Japanese: 立方体 (りっぽうたい, rippōtai)
  • Korean: 입방 (ipbang)
  • Latin: cubus
  • Latvian: kubs
  • Lithuanian: kubas
  • Maltese: kubu
  • Mongolian: шоо (šoo)
  • Persian: مکعب
  • Polish: sześcian
  • Portuguese: cubo
  • Romanian: cub
  • Russian: куб
  • Serbian:
    Cyrillic: коцка
    Roman: kocka
  • Slovak: kocka
  • Slovene: kocka
  • Swedish: kub
  • Thai: (lôok bàat)
  • Turkish: küp
object more or less in the form of a cube
arithmetic: number raised to the third power
  • Catalan: cub
  • Chinese:
    Mandarin: (lìfāng)
  • Dutch: derde macht
  • Finnish: kuutio
  • French: cube
  • Georgian: კუბი (kubi)
  • Greek: κύβος
  • Hebrew:
  • Hungarian: köb
  • Italian: cubo
  • Japanese: 三乗 (さんじょう, sanjō), 立方 (りっぽう, rippō)
  • Polish: do sześcianu
  • Portuguese: cubo
  • Russian: куб
  • Slovene: kub
  • Spanish: cubo
  • Swedish: kub
  • Thai: (bàat)
  • Turkish: küpü

Verb

  1. transitive arithmetic To raise to the third power; to determine the result of multiplying by itself twice.
    Three cubed can be written as 33, and equals twenty-seven.
  2. To form into the shape of a cube.
  3. To cut into cubes.
    Cube the ham right after adding the curry to the rice.
Synonyms
Translations
arithmetic: to raise to the third power
to cut into cubes
to form into the shape of a cube

Related terms

Derived terms

See also

Etymology 2

Clipped form of cubicle (with intentional reference to their common shape per cube, etymology 1), which from cubiculum, from cubare.

Noun

  1. A cubicle; especially of those found in offices.
Translations
cubicle
  • Finnish: kuutio

French

Etymology

lang=la.

Pronunciation

/kyb/|lang=fr

Noun

fr-noun m
  1. cube

Italian

Adjective

  1. Feminine plural form of cubo

Extensive Definition

This article is about the geometric shape. For other meanings of the word "cube", see cube (disambiguation).
A cube is a three-dimensional solid object bounded by six square faces, facets or sides, with three meeting at each vertex. The cube can also be called a regular hexahedron and is one of the five Platonic solids. It is a special kind of square prism, of rectangular parallelepiped and of 3-sided trapezohedron. The cube is dual to the octahedron. It has cubical symmetry (also called octahedral symmetry). A cube is the three-dimensional case of the more general concept of a hypercube, which exists in any dimension.

Cartesian coordinates

For a cube centered at the origin, with edges parallel to the axes and with an edge length of 2, the Cartesian coordinates of the vertices are
(±1,±1,±1)
while the interior consists of all points (x0, x1, x2) with -1 i a, As the volume of a cube is the third power of its sides a×a×a, third powers are called cubes, by analogy with squares and second powers.
A cube has the largest volume among cuboids (rectangular boxes) with a given surface area. Also, a cube has the largest volume among cuboids with the same total linear size (length + width + height).

Symmetry

The cube has 3 classes of symmetry, which can be represented by vertex-transitive coloring the faces. The highest octahedral symmetry Oh has all the faces the same color. The dihedral symmetry D4h comes from the cube being a prism, with all four sides being the same color. The lowest symmetry D2h is also a prismatic symmetry, with sides alternating colors, so there are three colors, paired by opposite sides. Each symmetry form has a different Wythoff symbol.
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