/ Dictionary / Index M Mus.D.: Meaning and Definition of Find definitions for: Mus.D. Pronunciation: [key] Doctor of Music. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: musd (Thesaurus) musculoskeletal muse Related Content Daily Word Quiz: placid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language