carbon monoxide

noun

: a colorless odorless very toxic gas CO that is formed as a product of the incomplete combustion of carbon or a carbon compound

Examples of carbon monoxide in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Authorities had conducted a second test of the hotel room for carbon monoxide poisoning after the first test showed no signs, Belize Police Commissioner Chester Williams said on Wednesday, March 19, per a clip shared by 7 News Belize. Charna Flam, People.com, 27 Mar. 2025 Authorities in Belize said Wednesday that three American women who were found dead last month while on vacation in the country died as a result of carbon monoxide poisoning. Kierra Frazier, CBS News, 26 Mar. 2025 Authorities in Belize are taking a closer look at the possibility that carbon monoxide poisoning may have played a role in the deaths of three Americans last month. Dennis Romero, NBC news, 25 Mar. 2025 Fire officials said crews responding to a Glen Arm home for a report of a cardiac arrest found dangerously high carbon monoxide levels. Todd Karpovich, Baltimore Sun, 25 Mar. 2025 See All Example Sentences for carbon monoxide

Word History

First Known Use

1868, in the meaning defined above

Time Traveler
The first known use of carbon monoxide was in 1868

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Cite this Entry

“Carbon monoxide.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/carbon%20monoxide. Accessed 1 Apr. 2025.

Kids Definition

carbon monoxide

noun
: a colorless odorless very poisonous gas formed by the incomplete burning of carbon

Medical Definition

carbon monoxide

noun
: a colorless odorless very toxic gas CO that burns to carbon dioxide with a blue flame and is formed as a product of the incomplete combustion of carbon

More from Merriam-Webster on carbon monoxide

Last Updated: - Updated example sentences
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