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English definition of “sector”

sector

noun [C] (CONTROLLED AREA)    /ˈsek.tər/ US  /-tɚ/
an area of land or sea that has been divided from other areas and is controlled by a particular country: What is the total oil output from the British sector of the North Sea?Parts of countries
(Definition of sector noun (CONTROLLED AREA) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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