/ Dictionary / Index M Musaf*: Meaning and Definition of Find definitions for: Mu•saf Pronunciation: (m'säf), [key] — n. Hebrew. the religious service celebrated by Jews in addition to and immediately after the morning service on the Sabbath and festivals. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. musaceous Mus.B. Related Content Daily Word Quiz: agitated Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language