/ Dictionary / Index R rectangular: Meaning and Definition of Find definitions for: rec•tan•gu•lar Pronunciation: (rek-tang'gyu-lur), [key] — adj. shaped like a rectangle. having the base or section in the form of a rectangle: a rectangular pyramid. having one or more right angles. forming a right angle. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: rectangular (Thesaurus) rectangle rectangular coordinates Related Content Daily Word Quiz: nonchalant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language