Definition of sputnik noun from the Oxford Advanced Learner's Dictionary

 

sputnik

 noun
noun
BrE BrE//ˈspʌtnɪk//
 
; NAmE NAmE//ˈspʌtnɪk//
 
; BrE BrE//ˈspʊtnɪk//
 
; NAmE NAmE//ˈspʊtnɪk//
 
(from Russian) Space travel
 
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a satellite of the type that was put into space by the Soviet Union See related entries: Space travel Word OriginRussian, literally ‘fellow-traveller’.
See the Oxford Advanced American Dictionary entry: sputnik