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.
Signs of carbon monoxide poisoning include headache, dizziness, vomiting, chest pain and weakness. Mike Stunson, Kansas City Star, 24 Sep. 2025 Monday’s lawsuit says the Food and Drug Administration has approved hyperbaric oxygen treatment for 13 conditions, such as carbon monoxide poisoning, foot wounds related to diabetes and decompression sickness in divers. Elizabeth Chuck, NBC news, 22 Sep. 2025 The result is silicon metal and carbon monoxide. IEEE Spectrum, 22 Sep. 2025 Know how to avoid injury from debris, contaminated water, carbon monoxide poisoning, electrocution, and damaged buildings and infrastructure. Staff Reports, AZCentral.com, 19 Sep. 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 30 Sep. 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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