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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.

Eugene Drennan is a former President of the Irish Road Haulage Association and runs a haulage company based in Co Clare.

From BBC

Walt Disney Co. and Pixar’s “Hoppers” came in second at the box office this weekend with a domestic total of $18 million.

From Los Angeles Times

The Walt Disney Co. first teased that the Blue Heeler puppy and her younger sister Bingo would be coming to the Anaheim theme park in 2024.

From Los Angeles Times

The declines in Europe follow losses in Asian stocks like Taiwan Semiconductor Manufacturing Co., which closed 2.9% lower.

From The Wall Street Journal

Walt Disney Co. installed Josh D’Amaro as chief executive Wednesday, beginning a new chapter for the storied Burbank entertainment giant.

From Los Angeles Times