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English definition of “regulator”

regulator

noun [C]     /ˈreɡjəleɪtər/
OFFICIAL someone whose job is to make sure that a system works in a fair way: the water industry regulatorOccupations and tradesControlling and being in chargeProtection and protectorsEnvironmental issues
EQUIPMENT a piece of equipment that is used to control the temperature, speed, etc of somethingMachinery and machinesHousehold equipment and domestic chores
(Definition of regulator noun from the Cambridge Learner's Dictionary © Cambridge University Press)

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