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Definitions

C.O.

NOUN
conscientious objector
Synonyms


co
NOUN
carbon monoxide
Synonyms


NOUN
commanding officer
Synonyms






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:

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

The C.O. sat glued to this chair, looking bored.

From Salon Aug. 8, 2020

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

From Seattle Times Aug. 18, 2019

There were a lot of people involved because they had to keep swapping over guards, and my C.O. refused to tell me who it had been, to protect them, you know?

From "Code Name Verity" by Elizabeth Wein

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

It's just that he was up against Lionel Messi and co…

From BBC Jun. 11, 2026

How Stokes, McCullum and co would love something similar.

From BBC Jun. 3, 2026

It will be close, but I am going for Eli Junior Kroupi and co to edge this.

From BBC Apr. 30, 2026

“Down co the sty to slop the hogs,” Grandma called back.

From "A Long Way from Chicago" by Richard Peck




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