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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

“Bud” Adams Jr.; television executive and producer Roone Arledge; longtime Oilers/Titans scout C.O.

From Seattle Times Jul. 7, 2022

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

From Salon Aug. 8, 2020

Only the day before, his C.O. had given Milton a new assignment in the upcoming invasion.

From "Middlesex: A Novel" by Jeffrey Eugenides

Can Xabi Alonso get more out of Cole Palmer and co this season?

From BBC Aug. 14, 2026

How Stokes, McCullum and co would love something similar.

From BBC Jun. 3, 2026

Ancelotti ticks that box: a record five Champions League titles and trophies in all five of Europe's major leagues carry real weight, even in a dressing room featuring Neymar, Vinicius Jr, Raphinha and co.

From BBC Jun. 1, 2026

The work was co led by Henn and Simon Gravel of McGill University.

From Science Daily Apr. 26, 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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