com‧mis‧sion‧er /kəˈmɪʃənə $ -ər/ noun [countable]

1. someone who is officially in charge of a government department in some countries

2. the head of the police department in some parts of the US

3. a member of a commission

[TahlilGaran] Dictionary of Contemporary English ▲

commissioner
noun
ADJ. high | assistant, deputy | special | European Union/EU, police, United Nations/UN
VERB + COMMISSIONER appoint, appoint sb (as)
PREP. ~ for He was appointed United Nations High Commissioner for refugees.

[TahlilGaran] Collocations Dictionary ▲