/ Dictionary / Index L luminophore: Meaning and Definition of Find definitions for: lu•mi•no•phore Pronunciation: (l'mu-nu-fôr", -fōr"), [key] — n. Physics, Chem. a molecule or group of molecules that emits light when illuminated. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. luminism luminosity Related Content Daily Word Quiz: arboreal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language