Com.

Collins Concise English Dictionary © HarperCollins Publishers::

Com. abbreviation

1. Commander
2. committee
3. Commodore

WordReference Random House Learner's Dictionary of American English © 2026

com-, prefix. 

1. com- comes from Latin, where it has the meaning "with, together with.'' This meaning is found in such words as: combine, commute, compare. For variants before other sounds, see co-, col-¹, con-, cor-.

Com.,  an abbreviation of:

1. Military Commander.
2. Commission.
3. Commissioner.
4. Committee.
5. Military Commodore.

com.,  an abbreviation of:

1. comedy.
2. commander.
3. commerce.
4. commercial.
5. committee.
6. common.
7. commonly.
8. communications.

WordReference Random House Unabridged Dictionary of American English © 2026

COM  (kom), n. 

1. Comedy Central (a cable television channel).
2. Computing computer output on microfilm.

com-, 

1. a prefix meaning "with,'' "together,'' "in association,'' and (with intensive force) "completely,'' occurring in loanwords from Latin (commit): used in the formation of compound words before b, p, m: combine;
   compare;
   commingle.

Also, co-, col-, con-, cor-. 

• Latin, variant of preposition cum with

Com., 

1. Military Commander.
2. Commission.
3. Commissioner.
4. Committee.
5. Military Commodore.
6. Commonwealth.

com., 

1. comedy.
2. comma.
3. command.
4. commander.
5. commerce.
6. commercial.
7. commission.
8. commissioner.
9. committee.
10. common.
11. commonly.
12. communications.

COM, 

1. Radio and Television Comedy Central (a cable television channel).