Co
cobalt.
Jump To:
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Co
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CO
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Co.
Co.abbreviationCompany.
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c/o
c/ocare of.
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C/o
C/ocare of.
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C/O
C/Ocash order.
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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 ).
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c.o.
c.o.abbreviationcare of.
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C.O.
C.O.abbreviationcash order.
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co
coabbreviationa commercial company (used with a country domain name)
Co
1 AmericanSymbol, Chemistry.
CO
2
American
Co.
3
American
Or
co.
abbreviation
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Company.
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County.
c/o
4
American
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care of.
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Bookkeeping. carried over.
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cash order.
C/o
5
American
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care of.
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Bookkeeping. carried over.
C/O
6
American
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cash order.
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certificate of origin.
co-
7
American
c.o.
8
American
abbreviation
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care of.
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carried over.
C.O.
9
American
abbreviation
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cash order.
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Commanding Officer.
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conscientious objector.
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correction officer.
CO
1
British
abbreviation
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Commanding Officer
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Commonwealth Office
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conscientious objector
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Colorado
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Colombia (international car registration)
co-
2
British
prefix
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together; joint or jointly; mutual or mutually
coproduction
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indicating partnership or equality
cofounder
copilot
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to the same or a similar degree
coextend
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(in mathematics and astronomy) of the complement of an angle
cosecant
codeclination
Co
3
British
abbreviation
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(esp in names of business organizations) Company
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informal and the rest of them
Harold and co
c/o
4
British
abbreviation
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care of
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accounting carried over
co
5
British
abbreviation
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a commercial company (used with a country domain name)
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Colombia
Co
6
British
symbol
Co
7
British
abbreviation
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:
“I think software is normalizing,” said Mark Malek, chief investment officer at Muriel Siebert & Co.
From MarketWatch ● Jul. 21, 2026
Other ships attacked this week include two oil tankers operated by a subsidiary of Abu Dhabi National Oil Co.,
From The Wall Street Journal ● Jul. 18, 2026
Two days after the Summer of Ludd ended, private jets and helicopters descended on Jackson Hole, Wyoming, to herald the start of the Allen & Co.
From Salon ● Jul. 13, 2026
Threave, Dumfries and Galloway recorded Scotland's highest temperature of 29.7C, while the highest temperature in Northern Ireland peaked at 27.4C in Killowen, Co.
From BBC ● Jul. 11, 2026
He had planned on riding a bicycle, just to be funny, and even went so far as to order one from Sears, Roebuck and Co.
From "Cold Sassy Tree" by Olive Ann Burns
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
The report reveals a teacher had brought in a domestic CO detector that her father had given her when she explained the previous day's events to him.
From BBC ● Nov. 20, 2025
The new material, however, bypasses these intermediates entirely, converting CO2 directly into CO on its surface.
From Science Daily ● Nov. 5, 2025
As he stood and turned, the CO at the table who had earlier told me to take it easy signaled me to relax.
From "Newjack: Guarding Sing Sing" by Ted Conover
It also said it had sold off the trademark and other assets related to Maple Street Biscuit Co. a fast-casual chain it had owned, and said it would close that chain’s 16 remaining locations.
From MarketWatch ● Jul. 28, 2026
Kuwait Petroleum Corp., the state-owned firm overseeing the sector, and its subsidiary Kuwait Oil Co., which explores and produces oil on behalf of the state, both signed the deal.
From The Wall Street Journal ● Jul. 27, 2026
Last week, Cracker Barrel said it would divest itself from its Maple Street Biscuit Co. business, a plank of Biglari’s activist campaign with the company.
From The Wall Street Journal ● Jul. 27, 2026
The approved buyer of the mothballed residential, hotel and retail project is a partnership led by Kali P. Chaudhuri, whose KPC Development Co. owns and builds commercial properties in California and India.
From Los Angeles Times ● Jul. 21, 2026
But tonight, for reasons that will never be explained, three police vehicles arrive at the Economy Printing Co. at 9125 Twelfth Street—three blocks from Pingree—and park at the curb.
From "Middlesex: A Novel" by Jeffrey Eugenides
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
Donations may be made online at www.miap.us or mailed to Missing in America Project, c/o John Hundahl, 1507 S. Quillan St., Kennewick, WA 99338.
From Seattle Times ● Apr. 10, 2018
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
Just in case, the desperate artist wrote an address on the package that read “Max Ernst c/o Museum of Modern Art, New York.”
From New York Times ● Nov. 4, 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 Hamilton, Ian, Sir
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
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
C/O was thus founded to rectify Berlin’s undervaluing of art photography.
From New York Times ● Dec. 26, 2010
The co- leader of Aberdeen City Council, Ian Yuill, told BBC Scotland News it had been the most intense and sustained period of snow he could remember in more than 50 years.
From BBC ● Jan. 6, 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
But last week Florida educational authorities were comparably steamed up about a c.o. teacher.
From Time Magazine Archive
Last week he got the Board to order the trial of a c.o. for incompetence.
From Time Magazine Archive
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
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
“Bud” Adams Jr.; television executive and producer Roone Arledge; longtime Oilers/Titans scout C.O.
From Seattle Times ● Jul. 7, 2022
Ian Ginsberg stood in his West Village office above C.O.
From New York Times ● Feb. 1, 2019
Permission for flight obtained from C.O. and I had made 4 successful night landings, 3 on simulated flare path, immed. previous to departure.
From "Code Name Verity" by Elizabeth Wein
This was supposed to be the Netherlands' time, as Johan Cruyff and co dazzled throughout the tournament with their revolutionary Total Football approach.
From BBC ● Jul. 17, 2026
Vinicius Jr. and co topped Group C - knocking out Scotland in the process - but were unconvincing on the one occasion they were truly tested, drawing 1-1 with Morocco in their opening fixture.
From BBC ● Jun. 28, 2026
How Stokes, McCullum and co would love something similar.
From BBC ● Jun. 3, 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
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.
