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English definition of “sector”

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sector

noun [C]  /ˈsek·tər/ us  
a part of society that can be separated from other parts because of its own special character: the farm sector the nonprofit sector She works in the private/public sector (= for a business/government) A sector is also an area of land or sea that has been divided from other areas: The buildings are in an industrial sector in the southern part of the city.
(Definition of sector from the Cambridge Academic Content Dictionary © Cambridge University Press)
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