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the USSR

noun
 
 
/ˌjuː.es.esˈɑːr/ US  /-ˈɑːr/

Definition

abbreviation for the Union of Soviet Socialist RepublicsCountry namesCountry and nationContinents and regions of the world
(Definition of the USSR noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
Focus on the pronunciation of the USSR