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Showing results for Co. Search instead for coing.
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  • Co
    Co
    cobalt.
  • CO
    CO
    abbreviation
    Colorado (approved especially for use with zip code).
  • Co.
    Co.
    abbreviation
    Company.
  • c/o
    c/o
    care of.
  • C/o
    C/o
    care of.
  • C/O
    C/O
    cash order.
  • co-
    co-
    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.
    c.o.
    abbreviation
    care of.
  • C.O.
    C.O.
    abbreviation
    cash order.
  • co
    co
    abbreviation
    a commercial company (used with a country domain name)
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.

See Examples For:

"Tim Cook left the house in phenomenal order," said Dan Ives, partner and senior managing director at investment firm Yorkville Ives & Co.

From Barron's Aug. 31, 2026

Iger just stepped down after two runs heading the Walt Disney Co.

From Los Angeles Times Aug. 25, 2026

Unitree, officially known as Yushu Technology Co Ltd, was founded in 2016 and now plays a key role in Beijing's ambitions to develop advanced technology.

From BBC Aug. 19, 2026

AMP has partnerships including a 20% stake in China Life Pension Co.

From The Wall Street Journal Aug. 7, 2026

Below the chandeliers spread an indoor city of “gilded domes and glittering minarets, mosques, palaces, kiosks, and brilliant pavilions,” according to the popular Rand, McNally & Co.

From "The Devil in the White City" by Erik Larson

Images of Air Force One parked at the Turkish airport show vehicles labeled with the logo of a catering company called Turkish DO & CO.

From The Wall Street Journal Aug. 13, 2026

CO chondrites, also called carbonaceous chondrites of the Ornans class, represent only a very small portion of that group.

From Science Daily Jul. 19, 2026

Pennington's hometown was Glendale, Kentucky, and he was assigned to the 1st Space Battalion, 1st Space Brigade out of Fort Carson, CO.

From Barron's Mar. 10, 2026

“What Eric voted for was a resolution to condemn a horrific antisemitic attack in Boulder, CO that killed Karen Diamond, an 82-year old grandmother,” a campaign spokesman said in a statement.

From Los Angeles Times Jan. 28, 2026

“Yeah, CO, the regular never make us do that,” the other joined in.

From "Newjack: Guarding Sing Sing" by Ted Conover

This season combines two books from Mick Herron’s best-selling series, “Joe Country” and “Slough House,” and finds Jackson Lamb & Co. on the defensive as someone’s killing off Slow Horses past and present.

From MarketWatch Aug. 31, 2026

The platform said it chose the Weather Co. because it is one of the most trusted meteorological brands.

From The Wall Street Journal Aug. 27, 2026

Hutchison said Thursday its unit Panama Ports Co. will continue to pursue its own rights under a separate arbitration against Panama.

From The Wall Street Journal Aug. 20, 2026

Delaware Life Insurance Co. said in a regulatory filing Tuesday that TWG Global will buy that much of affiliated assets that were found on its books amid a federal investigation.

From Los Angeles Times Aug. 18, 2026

“What better way to kick off Sender, Harari & Co. than by tracking down a sea monster?”

From "Night Owls" by A.R. Vishny

By filling out a form online or downloading the claim form and then mailing it to Facebook Consumer Privacy User Profile Litigation, c/o Settlement Administrator, 1650 Arch Street, Suite 2210, Philadelphia, PA 19103.

From Los Angeles Times Apr. 18, 2023

From lesser-known labels such as Vetements, Off-White c/o Virgil Abloh and Yang Li to global companies such as Dries Van Noten, Rick Owens, Prada and Maison Margiela, luxury now comes with unfinished hems.

From Washington Post Apr. 7, 2015

Write to them c/o King Features Syndicate, 300 W. 57th St., 15th floor, New York, NY 10019, or via their website: .

From Seattle Times Apr. 25, 2012

Open letter to Jerry Reinsdorf c/o Mark Gonzales You are loyal to a fault.

From Chicago Tribune Aug. 5, 2011

You may return expense advance to Lovelace Foundation c/o me.

From "Women in Space" by Karen Bush Gibson

As I have only four weeks in which to complete my work here and get to London a 'collect reply by cable to C/o Colonel Sellheim, Australian Intermediate Base, Cairo, would greatly oblige.

From Gallipoli Diary, Volume 2 by Sir Ian Hamilton

The box was a gift from Felix Hoffmann, chief curator at C/O Berlin gallery, which he made in 2013.

From The Wall Street Journal Nov. 3, 2015

His personal project, Anniversaries, will be exhibited at C/O Berlin from June 20 to August 16.

From Time Jun. 5, 2015

Freeze frame … the C/O Gallery focuses on photography.

From The Guardian Aug. 17, 2011

C/O was thus founded to rectify Berlin’s undervaluing of art photography.

From New York Times Dec. 26, 2010

A decade later, the scene has since caught up — though C/O remains at the epicenter, having shown the likes of Robert Frank and Nan Goldin.

From New York Times Dec. 26, 2010

Professor Rob Ogden has been closely involved in setting up the project and is co- founder of the organisation Trace, which promotes the use of forensic science in wildlife law enforcement.

From BBC Feb. 19, 2026

“Happy Father’s Day to my baby daddy and rad co- parent,” she captioned a pair of family photos.

From Los Angeles Times Nov. 4, 2025

He added, "We are committed to advancing our efforts to transform the prospect of a universal treatment, capable of controlling co- and serial infections of respiratory viruses and bacteria, into a reality."

From Science Daily Mar. 18, 2024

“The Yamnaya are extraordinary,” says the study’s co- author Volker Heyd, an archaeologist at the University of Helsinki.

From Scientific American Mar. 3, 2023

And I don’t want to give up the fun I have with my co- workers, especially Don Lucho with his gold tooth.

From "The Queen of Water" by Laura Resau

It seemed significant that our hero came clean about killing his c.o., the darkest element of Don Draper’s origin story, after initially lying about his rank.

From Slate May 11, 2015

He had said that his "humanitarian beliefs" forbade him to bear arms, but lost an appeal to the President for classification as a c.o.

From Time Magazine Archive

Investigators pronounced him sincere in his beliefs, but the draft authorities followed the Justice Department's advice and ruled that, by the letter of the law, he could not be considered a c.o.

From Time Magazine Archive

He emphasized that his c.o. ideas remained unchanged.

From Time Magazine Archive

The Selective Service Act makes it unmistakably clear that no one is to be exempted from the draft as a c.o. unless he holds to a "belief in a relation to a Supreme Being."

From Time Magazine Archive

Alec Ginsberg, a fourth-generation pharmacist who owns C.O.

From MarketWatch Jul. 23, 2026

Instead, it was “so many people screaming, screaming to talk to each other. Screaming for assistance: ‘Yo, C.O., my toilet flooded.

From Slate May 19, 2025

Loco told him that it had all been pretty bad, and the C.O. talked to Loco about his own experience.

From New York Times Apr. 6, 2021

An older, more-seasoned lifeboat pilot, future station C.O.

From Seattle Times Aug. 18, 2019

“I’ve been here for a while. I’m C.O. of 367 over at the air station.”

From "The Great Santini" by Pat Conroy

Pau Cubarsi: A commanding presence at the heart of defence as Mbappe, Dembele, Olise and co failed to ignite.

From BBC Jul. 14, 2026

In 2014, I was part of the side that returned home with our tails between our legs after losing 5-0 to Mitchell Johnson and co.

From BBC Jun. 2, 2026

Liverpool's season to forget may have finished last week but the problems continue for Slot and co.

From BBC May 29, 2026

Ochwat and study co author Ted Scambos, a senior research scientist at the University of Colorado Boulder, said new satellite technologies could significantly improve scientists' understanding of rapid glacier retreat.

From Science Daily May 19, 2026

D i s co m f It/d I s co m Fo RT.

From "Woe Is I" by Patricia T. O'Conner

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