Co Definition & Meaning

American

British

Etymology

Examples

Synonyms Co 1 American Symbol, Chemistry.

1. cobalt.

CO 2 American

abbreviation

1. Colorado (approved especially for use with zip code).

2. commanding officer.

3. conscientious objector.

Co. 3 American Or co.

abbreviation

1. Company.

2. County.

c/o 4 American

1. care of.

2. Bookkeeping. carried over.

3. cash order.

C/o 5 American

1. care of.

2. Bookkeeping. carried over.

C/O 6 American

1. cash order.

2. certificate of origin.

co- 7 American

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 American

abbreviation

1. care of.

2. carried over.

C.O. 9 American

abbreviation

1. cash order.

2. Commanding Officer.

3. conscientious objector.

4. correction officer.

CO 1 British

abbreviation

1. Commanding Officer

2. Commonwealth Office

3. conscientious objector

4. Colorado

5. Colombia (international car registration)

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 co- 2 British

prefix

1. together; joint or jointly; mutual or mutually

   coproduction

2. indicating partnership or equality

   cofounder

   copilot

3. to the same or a similar degree

   coextend

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

   cosecant

   codeclination

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Co 3 British

abbreviation

1. (esp in names of business organizations) Company

2. informal and the rest of them

   Harold and co

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 c/o 4 British

abbreviation

1. care of

2. accounting carried over

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 co 5 British

abbreviation

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

2. Colombia

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Co 6 British

symbol

1. cobalt

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Co 7 British

abbreviation

1. County

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of co-

from Latin, reduced form of com-

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The Walt Disney Co. has settled claims that it violated child privacy laws, said the U.S.

From Los Angeles Times

Earnings results from the largest U.S. banks—including JPMorgan Chase & Co., which is slated to report fourth-quarter figures on Jan. 13—will kick-start earnings season at large.

From Barron's

For “Malcolm in the Middle” fans and the Walt Disney Co.,

From Los Angeles Times

“In every crisis there is opportunity. Nestlé has been in a crisis of governance,” said Christopher Rossbach, chief investment officer of longtime Nestlé shareholder J. Stern & Co.

From The Wall Street Journal

In response, also on 7 March, government secretary Frank Murray said the trip was "far more extensive" than had been suggested initially, which involved a visit to Haulbowline harbour in Co Cork.

From BBC

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.