Co

¹

Symbol, Chemistry.

1. cobalt.

CO

²

abbreviation for

1. Colorado (approved especially for use with zip code).
2. commanding officer.
3. conscientious objector.

Co.

³

or co.

abbreviation for

1. Company.
2. County.

c/o

⁴

1. care of.
2. Bookkeeping. carried over.
3. cash order.

C/o

⁵

1. care of.
2. Bookkeeping. carried over.

C/O

⁶

1. cash order.
2. certificate of origin.

co-

⁷

1. variant of com- before a vowel, h, and gn: coadjutor; cohabit; cognate . The prefix co- now productively forms new words from bases beginning with any sound ( co-conspirator; co-manage; coseismic ), sometimes with the derived sense “auxiliary, subsidiary” ( coenzyme; copilot ), and, in mathematics and astronomy, with the sense “complement” ( codeclination ).

c.o.

⁸

abbreviation for

1. care of.
2. carried over.

C.O.

⁹

abbreviation for

1. cash order.
2. Commanding Officer.
3. conscientious objector.
4. correction officer.

Co

¹

abbreviation for

1. County

Co

²

the chemical symbol for

1. cobalt

co-

³

prefix

1. together; joint or jointly; mutual or mutually

   coproduction

2. indicating partnership or equality

   copilot

   cofounder

3. to the same or a similar degree

   coextend

4. (in mathematics and astronomy) of the complement of an angle

   cosecant

   codeclination

Co

⁴

abbreviation for

1. esp in names of business organizations Company
2. and co informal.
   and the rest of them

   Harold and co

c/o

⁵

abbreviation for

1. care of
2. accounting carried over

CO

⁶

abbreviation for

1. Commanding Officer
2. Commonwealth Office
3. conscientious objector
4. Colorado
5. Colombia (international car registration)

co

⁷

the internet domain name for

1. a commercial company (used with a country domain name)
2. Colombia

Word History and Origins

Origin of Co¹

from Latin, reduced form of com-

Example Sentences

“C O U R D O R O Y,” he said, saying each letter and then proudly declaring the word.

From The Daily Beast

Since it all goes well write me c/o of Bulter address and I will be sure to get them.

From Project Gutenberg

"I c-c-c-o-o-ouldn't help it," sputtered Ding-dong sorrowfully.

From Project Gutenberg

Well, when we moved here a week and a half ago and got settled a delegation from the ranks waited on the C. O.

From Project Gutenberg

Would you be kind enough to return the book to me c/o this Institute when you are finished with it?

From Project Gutenberg

While the Columbia grammar boys would reply, “C-o-l-u-m-b-i-a—Burke!”

From Project Gutenberg

Related Words

• administration
• administrator
• boss
• chief
• commander
• director
• entrepreneur
• government
• leader
• management
• manager
• officer
• official
• supervisor