ussr(n = noun.location) russia, soviet union, union of soviet socialist republics - 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;
is a kind of country, land, state
is a part of eurasia
has parts: soviet socialist republic, russia, russian soviet federated socialist republic, soviet russia, caspian, caspian sea

ussr, abbr. Union of Soviet Socialist Republics.