n. Abbr. Com. or Comr.
1. A member of a commission.
2. A person authorized by a commission to perform certain duties.
3. A governmental official in charge of a department: a police commissioner.
4. Sports An official selected by an athletic association or league to exercise administrative or regulatory powers over it: a baseball commissioner.
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2020 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.