/ Dictionary / Index H hypophonia: Meaning and Definition of Find definitions for: hy•po•pho•ni•a Pronunciation: (hī"pu-fō'nē-u), [key] — n. Pathol. an abnormally weak voice due to lack of coordination of the speech muscles. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. hypophonesis hypophosphate 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