/ Dictionary / Index P Pico Rivera: Meaning and Definition of Find definitions for: Pi•co Ri•ve•ra Pronunciation: (pē'kō ri-vâr'u, -vēr'u), [key] a city in SW California, near Los Angeles. 53,459. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. picoline picornavirus Related Content Daily Word Quiz: deleterious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language