/ Dictionary / Index R Russian Federation: Meaning and Definition of Find definitions for: Rus'sian Federa'tion Pronunciation: [key] a republic extending from E Europe to N and W Asia. 147,386,000; 6,593,000 sq. mi. (17,076,000 sq. km).Cap.:Moscow. Also calledFormerly (1918–91), Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Russian Empire Russianize Related Content Daily Word Quiz: ephemeral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language