/ Dictionary / Index P potassium chloride: Meaning and Definition of Find definitions for: potas'sium chlo'ride Pronunciation: [key] — Chem. Chem. a white or colorless, crystalline, water-soluble solid, KCl, used chiefly in the manufacture of fertilizers and mineral water, and as a source of other potassium compounds. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. potassium chlorate potassium cobaltinitrite Related Content Daily Word Quiz: resilient Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language