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English definition of “powerhouse”

powerhouse

noun [C usually singular] uk   /ˈpaʊə.haʊs/ us    /ˈpaʊr-/
a country, organization, or person with a lot of influence, power, or energy: Germany is an economic powerhouse. The university is no longer the academic powerhouse that it once was. She's a powerhouse of original ideas and solutions.People in charge of or controlling other peopleBosses, managers and directors
(Definition of powerhouse from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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