/ Dictionary / Index R Rio Grande do Sul: Meaning and Definition of Find definitions for: Ri•o Gran•de do Sul Pronunciation: (rē'oo grän'di doo sl'), [key] a state in S Brazil. 7,942,047; 107,923 sq. mi. (279,520 sq. km). Cap.: Pôrto Alegre. See Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Rio Grande do Norte Rioja Related Content Daily Word Quiz: gregarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language