/ Dictionary / Index O optophone: Meaning and Definition of Find definitions for: op•to•phone Pronunciation: (op'tu-fōn"), [key] — n. an electronic device that scans ordinary printed characters and produces combinations of sounds, enabling a blind reader to recognize the characters. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. optometry optotype Related Content Daily Word Quiz: panacea Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language