/ Dictionary / Index M Marañón: Meaning and Definition of Find definitions for: Ma•ra•ñón Pronunciation: (mä"rä-nyôn'), [key] — n. a river in Peru, flowing N and then E, joining the Ucayali to form the Amazon. 1000 mi. (1600 km) long. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Maranhão maranta 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