noun com·mis·sion·er \kə-ˈmi-sh(ə-)nər\

: a member of a commission : one of a group of people who have been given the official job of finding information about something or controlling something

: an official who is in charge of a government department or part of a government department

: an official who is in charge of a major professional sport (such as baseball, football, or hockey)

Full Definition of COMMISSIONER

:  a person with a commission: as
a :  a member of a commission
b :  the representative of the governmental authority in a district, province, or other unit often having both judicial and administrative powers
c :  the officer in charge of a department or bureau of the public service
d :  the administrative head of a professional sport
com·mis·sion·er·ship \-ˌship\ noun


  1. The baseball commissioner decided to suspend the players for 10 games.

First Known Use of COMMISSIONER

15th century
COMMISSIONER Defined for Kids


noun com·mis·sion·er \kə-ˈmi-shə-nər, -ˈmish-nər\

Definition of COMMISSIONER for Kids

:  a member of a commission
:  an official who is the head of a government department
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