/ Dictionary / Index R Rio de Janeiro: Meaning and Definition of Find definitions for: Ri•o de Ja•nei•ro Pronunciation: (rē'ō dā zhu-nâr'ō, -nēr'ō, ju-, dē, du Port. rē'&oobreve di zhi-nā'r&oobreve), [key] a seaport in SE Brazil: former capital. 5,184,292. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Río da Duvida Río de la Plata Related Content Daily Word Quiz: perspicacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language