/ Dictionary / Index I illuminator: Meaning and Definition of Find definitions for: il•lu•mi•na•tor Pronunciation: (i-l'mu-nā"tur), [key] — n. a person or thing that illuminates. a device for illuminating, as a light source with a lens or mirror for concentrating light. a person who paints manuscripts, books, etc., with designs in color, gold, or the like. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. illuminative illumine Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language