/ Dictionary / Index M mousse: Meaning and Definition of Find definitions for: mousse Pronunciation: (ms), [key] — n. chocolate mousse. a sweetened dessert with whipped cream as a base, often stabilized with gelatin and chilled in a mold:chocolate mousse. an aspic, unsweetened and containing meat, vegetables, or fish:salmon mousse. a foamy preparation used on the hair to help hold it in place, applied usually to damp hair before grooming or styling and worked in until absorbed. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: mousse (Thesaurus) moussaka mousseline Related Content Daily Word Quiz: clairvoyant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language