/ Dictionary / Index M masa: Meaning and Definition of Find definitions for: ma•sa Pronunciation: (mä'su Sp. mä'sä), [key] — n. Mexican Cookery. flour or dough made of dried, ground corn, used esp. for tortillas. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: masa (Thesaurus) mas. Masaccio 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