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See more synonyms for cubic on Thesaurus.com
  1. having three dimensions; solid.
  2. having the form of a cube; cubical.
  3. pertaining to the measurement of volume: the cubic contents of a vessel.
  4. pertaining to a unit of linear measure that is multiplied by itself twice to form a unit of measure for volume: cubic foot; cubic centimeter; cubic inch; cubic meter.
  5. Mathematics. of or relating to the third degree.
  6. Crystallography. belonging or pertaining to the isometric system of crystallization.
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  1. Mathematics. a cubic polynomial or equation.
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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
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words for cubic

square, cubic

Examples from the Web for cubic

Contemporary Examples of cubic

Historical Examples of cubic

British Dictionary definitions for cubic


  1. 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
  2. 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
  3. 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)
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  1. maths
    1. a cubic equation, such as x ³ + x + 2 = 0
    2. a cubic term or expression
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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.

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Online Etymology Dictionary, © 2010 Douglas Harper

cubic in Science


  1. Referring to a volume unit of measurement.
  2. Involving a number or a variable that has been raised to the third power.
  3. 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.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.