Breadcrumb Home > Dictionary > Index M Mex.: Meaning and Definition of Find definitions for: Mex. Pronunciation: [key] Mexican. Mexico. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. mewl Mexicali ✖ Related Content Daily Word Quiz: tendentious Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language