/ Dictionary / Index P phonasthenia: Meaning and Definition of Find definitions for: phon•as•the•ni•a Pronunciation: (fō"nas-thē'nē-u), [key] — n. Med. difficult or abnormal voice production; vocal weakness. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. phon phonate Related Content Daily Word Quiz: reclusive Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language