-
- To save this word, you'll need to log in.
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
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
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.
Word History
First Known Use
1868, in the meaning defined above
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
Britannica.com: Encyclopedia article about carbon monoxide
Love words? Need even more definitions?
Merriam-Webster unabridged
Share