Akademik

USSR

abbr. Union of Soviet Socialist Republics.

* * *

U.S.S.R. or USSR (no periods),

the former Union of Soviet Socialist Republics.

* * *

(also U.S.S.R.) historical abbr. Union of Soviet Socialist Republics

* * *

USSR [USSR] [ˌjuː es es ˈɑː(r)] [ˌjuː es es ˈɑːr] abbreviation

(the former) Union of Soviet Socialist Republics

Useful english dictionary. 2012.