/ Dictionary / Index P Puerto Rico: Meaning and Definition of Find definitions for: Puer•to Ri•co Pronunciation: (pwer'tu rē'kō, pwer'tō, pôr'tu, pōr'- Sp. pwer'tô rē'kô), [key] an island in the central West Indies: a commonwealth associated with the U.S. 3,196,520; 3435 sq. mi. (8895 sq. km). Cap.: San Juan. Formerly (until 1932),Abbr: P.R., PR Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Puerto Rican royal palm Puerto Rico Trench Related Content Daily Word Quiz: acerbity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language