- c.o.
- 1. care of.2. carried over.
* * *
Commanding Officer: an officer in charge of a military unitThesaurus: officers in the armed forceshyponym* * *
co-,3. equally: »Coextensive = equally extensive.
4. Mathematics. complement: »Cosine = sine of the complement (of a given angle or arc).
c/o (no periods) or c.o.,1. carried over.2. in care of.Co (no period),cobalt (chemical element).Co. or co.,1. company.2. county.CO (no periods) or C.O.,an abbreviation for the following:1. cash order.2. Colorado (with postal Zip Code).3. commanding officer.4. Informal. conscientious objector.
Useful english dictionary. 2012.