/ Dictionary / Index M mousseline: Meaning and Definition of Find definitions for: mousse•line Pronunciation: (ms-lēn'), [key] — n. Also calledhollandaise sauce mixed with whipped cream. any prepared dish made light and fluffy or airy, as by the mixing in of whipped cream or beaten egg whites. —adj. prepared or served with whipped cream. mousse•line Pronunciation: (ms-lēn'), [key] — n. French. muslin. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. mousse mousseline de laine* 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