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

 

superpower

 noun
noun
BrE BrE//ˈsuːpəpaʊə(r)//
 
, BrE//ˈsjuːpəpaʊə(r)//
 
; NAmE NAmE//ˈsuːpərpaʊər//
 
 
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one of the countries in the world that has very great military or economic power and a lot of influence, for example the USExtra examples Japan’s status as an economic superpower Politically, the 1950s saw a Cold War between the superpowers. The United States was left as the only global superpower.
See the Oxford Advanced American Dictionary entry: superpower