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English definition of “supremacy”

supremacy

noun [U] uk   /suːˈprem.ə.si/ us  

supremacy noun [U] (HIGHEST)

the leading or controlling position: The company has begun to challenge the supremacy of the current leading manufacturers in the textiles industry. The allies have established air supremacy (= military control of the sky).

supremacy noun [U] (GREATEST)

the position of being the best: a struggle for supremacy This victory clearly proves the supremacy of the Brazilians in football.
(Definition of supremacy from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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