/ Dictionary / Index A ammonium nitrate: Meaning and Definition of Find definitions for: ammo'nium ni'trate Pronunciation: [key] — Chem. Chem. a white, crystalline, water-soluble powder, NHNO, usually produced by reacting nitric acid with vaporous ammonia: used chiefly in explosives, fertilizers, freezing mixtures, and in the manufacture of nitrous oxide. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. ammonium lactate ammonium phosphate 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