a republic in E Europe; part of the medieval Lithuanian and Polish empires before being occupied by Russia; a Soviet republic (1919–91); in 1997 formed a close political and economic union with Russia: mainly low-lying and forested. Languages: Belarussian; Russian. Religion: believers are mostly Christian. Currency: rouble. Capital: Minsk. Pop: 9 625 888 (2013 est). Area: 207 600 sq km (80 134 sq miles) Also called Byelorussian Republic, Bielorussia, White Russia