/ Dictionary / Index H hypophosphate: Meaning and Definition of Find definitions for: hy•po•phos•phate Pronunciation: (hī"pu-fos'fāt), [key] — n. a salt or ester of hypophosphoric acid. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. hypophonia hypophosphite Related Content Daily Word Quiz: cygnet Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language