/ Dictionary / Index A ammonium chromic sulfate: Meaning and Definition of Find definitions for: ammo'nium chro'mic sul'fate Pronunciation: [key] — Chem. Chem. See(def. 1). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. ammonium chrome alum ammonium cyanate Related Content Daily Word Quiz: illegible Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language