/ Dictionary / Index P photoreceptor: Meaning and Definition of Find definitions for: pho•to•re•cep•tor Pronunciation: (fō"tō-ri-sep'tur), [key] — n. Physiol., Biol. a receptor stimulated by light. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. photoreception photorecon Related Content Daily Word Quiz: denizen Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language