/ Dictionary / Index I illumination: Meaning and Definition of Find definitions for: il•lu•mi•na•tion Pronunciation: (i-l"mu-nā'shun), [key] — n. an act or instance of illuminating. the fact or condition of being illuminated. a decoration of lights, usually colored lights. Sometimes,an entertainment, display, or celebration using lights as a major feature or decoration. intellectual or spiritual enlightenment. the intensity of light falling at a given place on a lighted surface; the luminous flux incident per unit area, expressed in lumens per unit of area. a supply of light: a source of illumination. decoration of a manuscript or book with a painted design in color, gold, etc. a design used in such decoration. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: illumination (Thesaurus) illuminating illuminative 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