English

Definition of USSR abbreviation from the Oxford Advanced Learner's Dictionary

 

USSR

 abbreviation
abbreviation
BrE BrE//ˌjuː es es ˈɑː(r)//
 
; NAmE NAmE//ˌjuː es es ˈɑːr//
 
 
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(the former) Union of Soviet Socialist Republics
See the Oxford Advanced American Dictionary entry: USSR