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
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To make them, coal feed is usually converted to something called syngas (carbon monoxide and hydrogen gas).
—
Christopher McFadden, Interesting Engineering, 4 Jan. 2026
Instead of leaving the vehicle, for more long-term warmth, run your engine about 10 minutes each hour to stay warm, but open a window slightly for ventilation and ensure your exhaust pipe is clear of snow to prevent carbon monoxide buildup.
—Brandi D. Addison, Freep.com, 31 Dec. 2025
Do not use generators or grills inside as carbon monoxide poisoning can result.
—Ca Weather Bot, Sacbee.com, 30 Dec. 2025
Safety & Maintenance Full transparency, both systems come with potential risks to your home like carbon monoxide poisoning and gas explosions.
—Ashlyn Needham, Southern Living, 27 Dec. 2025
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Christopher McFadden, Interesting Engineering, 4 Jan. 2026
Instead of leaving the vehicle, for more long-term warmth, run your engine about 10 minutes each hour to stay warm, but open a window slightly for ventilation and ensure your exhaust pipe is clear of snow to prevent carbon monoxide buildup.
—Brandi D. Addison, Freep.com, 31 Dec. 2025
Do not use generators or grills inside as carbon monoxide poisoning can result.
—Ca Weather Bot, Sacbee.com, 30 Dec. 2025
Safety & Maintenance Full transparency, both systems come with potential risks to your home like carbon monoxide poisoning and gas explosions.
—Ashlyn Needham, Southern Living, 27 Dec. 2025
See All Example Sentences for carbon monoxide
Cite this Entry
“Carbon monoxide.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/carbon%20monoxide. Accessed 10 Jan. 2026.
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