Byelorussia

[byel-oh-ruhsh-uh, bel-oh-] /ˌbyɛl oʊˈrʌʃ ə, ˌbɛl oʊ-/
noun
1.
Official name Belarus. Formerly White Russian Soviet Socialist Republic, Byelorussian Soviet Socialist Republic. a republic in E Europe, N of Ukraine: formerly a part of the Soviet Union. 80,154 sq. mi. (207,600 sq. km).
Capital: Minsk.
2.
a region in the W part of former czarist Russia.
Also, Belorussia.
Also called White Russia.
British Dictionary definitions for Byelorussia

Belarus

/ˈbɛləˌrʌs; -ˌrʊs/
noun
1.
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

Byelorussia

noun
1.
a variant spelling of Belarus