/ Dictionary / Index M mercado*: Meaning and Definition of Find definitions for: mer•ca•do Pronunciation: (mer-kä'ô), [key] — pl. -dos a market. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Merca Mercalli scale Related Content Daily Word Quiz: arid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language