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.
Three buildings were evacuated, one due to the fire and two because high amounts of carbon monoxide were detected. Ellen Moynihan, New York Daily News, 28 Nov. 2024 In that time, the agency said, American vehicles have become 99 percent cleaner, cutting pollutants like particulate matter, soot and carbon monoxide that contribute to asthma, heart problems and cancer. Dan Perry, Newsweek, 26 Nov. 2024 This methanol could only have formed on grains of carbon monoxide–rich ice, which would have filled the cold molecular cloud from which the protoplanetary disk came but would then have vaporized in the warm disk. Elise Cutts, Quanta Magazine, 13 Nov. 2024 Its residential smoke and carbon monoxide alarms, under the trade names Universal and USI Electric, are manufactured in and imported from China. Lorraine Mirabella, Baltimore Sun, 1 Nov. 2024 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

Dictionary Entries Near carbon monoxide

Cite this Entry

“Carbon monoxide.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/carbon%20monoxide. Accessed 15 Dec. 2024.

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
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!