/ Dictionary / Index B brilliance: Meaning and Definition of Find definitions for: bril•liance Pronunciation: (bril'yuns), [key] — n. great brightness; luster: the brilliance of a fine diamond. excellence or distinction; conspicuous talent, mental ability, etc. splendor, elegance, or magnificence: the brilliance of the court of Louis XIV. that luminance of a body consisting of its saturation and brightness. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: brilliance (Thesaurus) Brillat-Savarin brilliancy Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language