English

Definition of prime mover noun from the Oxford Advanced Learner's Dictionary

 

prime mover

 noun
noun
BrE BrE//ˌpraɪm ˈmuːvə(r)//
 
; NAmE NAmE//ˌpraɪm ˈmuːvər//
 
 
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a person or thing that starts something and has an important influence on its development With Germany, France has been the prime mover in closer European integration.
See the Oxford Advanced American Dictionary entry: prime mover