'Union of Soviet Socialist Republics' definitions:
Definition of 'Union of Soviet Socialist Republics'
From: WordNet
noun
A former communist country in eastern Europe and northern Asia; established in 1922; included Russia and 14 other soviet socialist republics (Ukraine and Byelorussia and others); officially dissolved 31 December 1991 [syn: Soviet Union, Russia, Union of Soviet Socialist Republics, USSR]