Definition of regulator noun from the Oxford Advanced American Dictionary

      

    regulator

     noun
    noun
    NAmE//ˈrɛɡyəˌleɪt̮ər//
     
     
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  1. 1 a person or an organization that officially controls an area of business or industry and makes sure that it is operating fairly a gas industry regulator banking regulators
  2. 2a device that automatically controls something such as speed, temperature, or pressure a pressure regulator
See the Oxford Advanced Learner's Dictionary entry: regulator