| CO3 |
abbreviation of "conscientious objector," a person who refuses, for moral or religious reasons, to participate in military service or to engage in warfare. |
| Co |
symbol of the chemical element cobalt. |
| CO1 |
abbreviation of "Colorado," a western U.S. state bordered by Wyoming, Kansas, New Mexico, and Utah. |
| Co.2 |
abbreviation of "County," a subdivision of a U.S. state for purposes of local administration and government (used in a proper name). [2 definitions] |
| Co.1 |
abbreviation of "Company," a business firm (used in a proper name). |
| c/o |
abbreviation of "(in the) care of." |
| co- |
together; with; jointly. [2 definitions] |
| CO2 |
abbreviation of "carbon dioxide," a colorless, odorless, incombustible gas that is produced naturally in breathing, combustion, and decomposition, and commercially for use in dry ice, fire extinguishers, and carbonated beverages. |
| coach |
a four-wheeled, horse-drawn carriage, enclosed, with an outside seat for the driver. [8 definitions] |
| coachable |
combined form of coach. |
| coach dog |
a Dalmatian, once trained to run behind coaches. |
| coachman |
a male driver of a coach or other carriage. [2 definitions] |
| coact |
combined form of act. |
| coactive |
combined form of active. |
| coactor |
combined form of actor. |
| coadjutor |
an assistant, esp. the principal assistant of a bishop. |
| coadministration |
combined form of administration. |
| coagulant |
a substance that causes fluid to thicken; agent of coagulation. |
| coagulate |
to cause (a liquid) to thicken into a semisolid mass. [2 definitions] |
| coal |
a hard black or dark brown substance found in the earth and burned as fuel. [3 definitions] |
| coaler |
a ship or freight train used to haul coal. |