/ Dictionary / Index A ammonium purpurate: Meaning and Definition of Find definitions for: ammo'nium pur'pu•rate Pronunciation: (pûr'pyur-it, -pyu-rāt"), [key] — Chem. Chem. murexide. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. ammonium phosphate ammonium salt Related Content Daily Word Quiz: languid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language