American English

Definition of controller noun from the Oxford Advanced American Dictionary



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  1. 1a person who manages or directs something, especially a large organization or part of an organization see also air traffic controller
  2. 2(technology) a device that controls or regulates a machine or part of a machine a temperature controller
  3. 3(also comptroller) a person who is in charge of the financial accounts of a business company, university, or hospital
See the Oxford Advanced Learner's Dictionary entry: controller

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