/ Dictionary / Index M Masaccio: Meaning and Definition of Find definitions for: Ma•sac•cio Pronunciation: (mä-sät'chô Eng. m&schwa-sä'chē-ō&sec), [key] — n. 1401–28?, Italian painter. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. masa Masada 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