/ Dictionary / Index P potassium bisulfate: Meaning and Definition of Find definitions for: potas'sium bisul'fate Pronunciation: [key] — Chem. Chem. a colorless, crystalline, water-soluble solid, KHSO, used chiefly in the conversion of tartrates to bitartrates. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. potassium binoxalate potassium bitartrate Related Content Daily Word Quiz: winsome Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language