/ Dictionary / Index T trapezoid: Meaning and Definition of Find definitions for: trap•e•zoid Pronunciation: (trap'u-zoid"), [key] — n. a quadrilateral plane figure having two parallel and two nonparallel sides. Brit.trapezium (def. 1b). a bone in the wrist that articulates with the metacarpal bone of the forefinger. —adj. of, pertaining to, or having the form of a trapezoid. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: trapezoid (Thesaurus) trapezohedron trapezoidal rule Related Content Daily Word Quiz: cautious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language