Breadcrumb Home > Thesaurus > T Synonyms of trapezoid Find synonyms for: Noun 1. trapezoid, quadrilateral, quadrangle, tetragon usage: a quadrilateral with two parallel sides 2. trapezoid, trapezoid bone, os trapezoideum, carpal bone, carpal, wrist bone usage: the wrist bone between the trapezium and the capitate bones WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of trapezoid (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. Hanukkah Origins of the Christmas Holiday Jewish Holidays, 2010-2030 (A.M. 5770-5791) Western Christian Holidays, 2010-2030 Krampus: The Christmas Devil Kwanzaa ✖ Related Content Daily Word Quiz: demagogue Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language