/ Dictionary / Index S S.M.M.: Meaning and Definition of Find definitions for: S.M.M. Pronunciation: [key] Master of Sacred Music. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Smitty smock Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language