• synonyms


  1. Also cu·boi·dal. resembling a cube in form.
  2. Anatomy. noting or pertaining to the outermost bone of the distal row of tarsal bones.
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  1. Mathematics. a rectangular parallelepiped.
  2. Anatomy. the cuboid bone.
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Origin of cuboid

First recorded in 1700–10, cuboid is from the Greek word kyboeidḗs cubelike. See cube1, -oid
Related formssub·cu·boid, adjectivesub·cu·boi·dal, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for cuboid

Historical Examples

  • The cuboid is small; the scaphoid is large, and flattened from above downwards.

    Artistic Anatomy of Animals

    douard Cuyer

  • The foot in the Dwarf-Lemurs is long, on account of the elongation of two of its ankle-bones (the cuboid and the naviculare).

  • Note, in a cross-section, that there are small ovoid or cuboid cells at the bases of the large ectoderm cells.

  • In the former the calcic scales and crystals are distinct and quite as in L. tigrinum; in the latter they are cuboid, irregular.

    The North American Slime-Moulds

    Thomas H. (Thomas Huston) MacBride

  • The distal row of the tarsus has four bones, three cuneiforms and a cuboid.

British Dictionary definitions for cuboid


adjective Also: cuboidal (kjuːˈbɔɪdəl)
  1. shaped like a cube; cubic
  2. of or denoting the cuboid bone
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  1. the cubelike bone of the foot; the outer distal bone of the tarsus
  2. maths a geometric solid whose six faces are rectangles; rectangular parallelepiped
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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 cuboid


"cube-like," 1829, a modern coinage; see cube (n.) + -oid.

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Online Etymology Dictionary, © 2010 Douglas Harper

cuboid in Medicine


  1. Having the approximate shape of a cube.
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  1. A tarsal bone on the outer side of the foot, articulating in front with the calcaneus and lateral cuneiform, and behind with the fourth and fifth metatarsal bones.
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Related formscu•boidal (kyōō-boidl) adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.