/ Dictionary / Index S Sov. Un.: Meaning and Definition of Find definitions for: Sov. Un. Pronunciation: [key] Soviet Union. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. sovran sow 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