[ kyoo-bik ]
/ ˈkyu bɪk /



Mathematics. a cubic polynomial or equation.


Nearby words

  1. cube farm,
  2. cube root,
  3. cube steak,
  4. cube van,
  5. cubeb,
  6. cubic centimeter,
  7. cubic measure,
  8. cubic zirconia,
  9. cubical,
  10. cubically

Origin of cubic

1490–1500; earlier cubik < Latin cubicus < Greek kybikós. See cube1, -ic

Related formscu·bic·i·ty [kyoo-bis-i-tee] /kyuˈbɪs ɪ ti/, nounsub·cu·bic, adjectiveun·cu·bic, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for cubic

British Dictionary definitions for cubic


/ (ˈkjuːbɪk) /


having the shape of a cube
  1. having three dimensions
  2. denoting or relating to a linear measure that is raised to the third powera cubic metre Abbreviation: cu., c
maths of, relating to, or containing a variable to the third power or a term in which the sum of the exponents of the variables is three
Also: isometric, regular crystallog relating to or belonging to the crystal system characterized by three equal perpendicular axes. The unit cell of cubic crystals is a cube with a lattice point at each corner (simple cubic) and one in the cube's centre (body-centred cubic), or a lattice point at each corner and one at the centre of each face (face-centred cubic)


  1. a cubic equation, such as x ³ + x + 2 = 0
  2. a cubic term or expression
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for cubic



1550s, from Middle French cubique (14c.), from Latin cubicus, from Greek kybikos, from kybos "cube" (see cube (n.)). Related: Cubical.

Online Etymology Dictionary, © 2010 Douglas Harper

Science definitions for cubic


[ kyōōbĭk ]

Referring to a volume unit of measurement.
Involving a number or a variable that has been raised to the third power.
Relating to a crystal having three axes of equal length intersecting at right angles. The mineral pyrite has cubic crystals. Also called isometric See illustration at crystal.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.