Dictionary Home » Dictionary Definitions » co

co

The definition of c/o is the abbreviation for care of or cash order.

(abbreviation)

An example of c/o is what you write along with a name as the first line in an address on an envelope when the person to whom you are sending the letter is not a known resident at the address.

The definition of co means together, partner, assistant, equally or jointly.

(prefix)

An example of co is cofounder, which a person who partnered with another person to found a company or organization.
An example of co is cochair, which is a person who is jointly in charge of something with another.

See co in Webster's New World College Dictionary

care of
Bookkeeping carried over
company
county

Company
Bible Corinthians
County

Chem. cobalt

Colorado
Commanding Officer
conscientious objector

together: coact
mutually, equally: coextensive
joint or jointly: copilot, coauthor
Math. complement of: cosine

Origin: var of com-, orig. occurring only before a vowel, h, or gn

cash order
care of
Bookkeeping carried over

See co in American Heritage Dictionary 4

The symbol for the element cobalt.

abbreviation
Bible

Corinthians

abbreviation

Accounting carried over
cash order
Colorado
commanding officer
conscientious objector

abbreviation

company
county

abbreviation

care of

prefix

Together; joint; jointly; mutually: coeducation.
a. Partner or associate in an activity: coauthor; cofounder.
b. Subordinate or assistant: copilot.
To the same extent or degree: coextensive.
Complement of an angle: cotangent.

Origin:

Origin: Middle English

Origin: , from Latin

Origin: , variant of com-, com-

abbreviation

Colombia (in Internet addresses)

Learn more about co

CO computer definition

Co medical definition

Co science

Related Articles

List of All 50 State Abbreviations