/ Dictionary / Index P purpurin: Meaning and Definition of Find definitions for: pur•pu•rin Pronunciation: (pûr'pyoo-rin), [key] — n. Chem. a reddish, crystalline, anthraquinone dye, CHO(OH), isomeric with flavopurpurin. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. purpure purr Related Content Daily Word Quiz: fervor Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language