/ Dictionary / Index P photoluminescence: Meaning and Definition of Find definitions for: pho•to•lu•mi•nes•cence Pronunciation: (fō"tu-l"mu-nes'uns), [key] — n. Physics. luminescence induced by the absorption of infrared radiation, visible light, or ultraviolet radiation. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. photolithography photolysis Related Content Daily Word Quiz: hale Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language