/ Dictionary / Index M monobasic potassium phosphate: Meaning and Definition of Find definitions for: monobas'ic potas'sium phos'phate Pronunciation: [key] potassium diphosphate. See under Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. monobasic monobasic sodium phosphate Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language