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:
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
The supply shortages have sent global gasoline and diesel profit margins surging, said Matthew Blair, an analyst with TPH & Co.
From MarketWatch ● Jul. 15, 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
Before the tournament, I kept hearing about how dangerous they would be, but Messi and Co are the only side left flying the flag.
From BBC ● Jul. 8, 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
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
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
Charles Greiner, who was fit, white-haired, and soft-spoken, stood before the lectern and told us he had come up through the system, starting upstate as a CO.
From "Newjack: Guarding Sing Sing" by Ted Conover
Shorris is a longtime City Hall official who has most recently worked as a partner at McKinsey & Co., but whose municipal experience stretches back to the 1980s.
From The Wall Street Journal ● Jul. 22, 2026
TPG led a $4 billion investment in OpenAI Deployment Co., which will remain majority-owned by OpenAI.
From The Wall Street Journal ● Jul. 22, 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
“Together we will build creative experiences for our consumers across our destinations, platforms, and fan touchpoints,” Becca Vodnoy, Walt Disney Co. senior vice president of corporate alliances, said in the statement.
From Los Angeles Times ● Jul. 21, 2026
It cost five dollars from the Talking Machine Department at Sears, Roebuck and Co., and he’d ordered a dozen “best and loudest music records” to play on it.
From "Cold Sassy Tree" by Olive Ann Burns
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
Contact Getting Around at [email protected] or c/o the Chicago Tribune, 435 N. Michigan Ave., Chicago, IL 60611; on Twitter @jhilkevitch; and at facebook.com/jhilkevitch.
From Chicago Tribune ● Dec. 14, 2014
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
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
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
Nadiem has gained a large following as the co- founder of one of Indonesia's most successful tech companies.
From BBC ● Jun. 30, 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
NOTE.—The forms co-, col-, com-, and cor-, are euphonic variations of con-.
From New Word-Analysis by William Swinton
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 emphasized that his c.o. ideas remained unchanged.
From Time Magazine Archive
But last week Florida educational authorities were comparably steamed up about a c.o. teacher.
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
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
An older, more-seasoned lifeboat pilot, future station C.O.
From Seattle Times ● Aug. 18, 2019
Mr. Ginsberg, the Indiana Jones of apothecary relics, is also the president, owner, and historical expert of C.O.
From New York Times ● Feb. 1, 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
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
Associate Professor Nic Rawlence, Director of the Otago Palaeogenetics Laboratory, is a co author of the new study, which investigates the fossil and its evolutionary relationships.
From Science Daily ● Jul. 11, 2026
Football fever is growing in the States with the co hosts looking an organised side.
From BBC ● Jul. 4, 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
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.
