/ Dictionary / Index P potassium diphosphate: Meaning and Definition of Find definitions for: potas'sium diphos'phate Pronunciation: [key] — Chem. Chem. See underAlso called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. potassium dichromate potassium ferricyanide Related Content Daily Word Quiz: eureka Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language