Breadcrumb Home > Dictionary > Index A Alta.: Meaning and Definition of Find definitions for: Alta. Pronunciation: [key] Alberta. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. alt Altadena ✖ Related Content Daily Word Quiz: nabob Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language