/ Dictionary / Index Q quadrangular: Meaning and Definition of Find definitions for: quad•ran•gu•lar Pronunciation: (kwo-drang'gyu-lur), [key] — adj. having four angles and four sides; having the shape of a quadrangle. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: quadrangular (Thesaurus) quadrangle quadrans Related Content Daily Word Quiz: tactful Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language