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

powerhouse

noun

/ˈpaʊəhaʊs/

/ˈpaʊərhaʊs/

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a group or an organization that is strong and effective in its activities
- China has been described as an economic powerhouse.
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a person who is very strong and full of energyTopics Personal qualitiesc2

See powerhouse in the Oxford Advanced American Dictionary

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