/ Dictionary / Index M Master of Arts: Meaning and Definition of Find definitions for: Mas'ter of Arts' Pronunciation: [key] a master's degree given usually in a specific branch of the humanities or social sciences. a person who has been awarded this degree. Abbr.: M.A., A.M. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. mastermind master of ceremonies Related Content Daily Word Quiz: cautious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language