/ Dictionary / Index C cuboid: Meaning and Definition of Find definitions for: cu•boid Pronunciation: (ky'boid), [key] — adj. resembling a cube in form. noting or pertaining to the outermost bone of the distal row of tarsal bones. —n. a rectangular parallelepiped. the cuboid bone. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: cuboid (Thesaurus) cubitus cuboidal epithelium Related Content Daily Word Quiz: loathe Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language