/ Dictionary / Index A ammonium thiocyanate: Meaning and Definition of Find definitions for: ammo'nium thiocy'anate Pronunciation: [key] — Chem. Chem. a colorless, crystalline, deliquescent, water-soluble solid, CHNS, used chiefly as a herbicide and as a fixative in textile printing. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. ammonium sulfate ammonium thiosulfate Related Content Daily Word Quiz: mamba Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language