/ Dictionary / Index M Minas de Ríotinto: Meaning and Definition of Find definitions for: Mi•nas de Rí•o•tin•to Pronunciation: (mē'näs e rē"ô-tēn'tô), [key] a town in SW Spain: copper mines. 7903. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Minas Basin Minas Gerais Related Content Daily Word Quiz: sequester Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language