/ Dictionary / Index P parallelogram: Meaning and Definition of Find definitions for: par•al•lel•o•gram Pronunciation: (par"u-lel'u-gram"), [key] — n. a quadrilateral having both pairs of opposite sides parallel to each other. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: parallelogram (Thesaurus) parallel of latitude parallelogram law Related Content Daily Word Quiz: exemplary Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language