/ Dictionary / Index U Upper Volta: Meaning and Definition of Find definitions for: Up'per Vol'ta Pronunciation: [key] former name of Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Upper Tunguska up-phase Related Content Daily Word Quiz: endear Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language