/ Dictionary / Index L La Rioja: Meaning and Definition of Find definitions for: La Rio•ja Pronunciation: (lä ryô'hä), [key] a city in W Argentina. 66,826. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. larine Larissa Related Content Daily Word Quiz: winsome Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language