American English

Definition of commissioner noun from the Oxford Advanced American Dictionary



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  1. 1Commissioner a member of a commission (= an official group of people who are responsible for controlling something or finding out about something) the Securities and Exchange Commissioner planning commissioners
  2. 2(also police commissioner) the head of a particular police force in some countries
  3. 3the head of a government department in some countries the agriculture/health, etc. commissioner Commissioner Rhodes was unavailable for comment. see also High Commissioner
  4. 4an official chosen by a sports association to control it the baseball commissioner
See the Oxford Advanced Learner's Dictionary entry: commissioner