carbon dioxide
noun
: a heavy colorless gas CO2 that does not support combustion, dissolves in water to form carbonic acid, is formed especially in animal respiration and in the decay or combustion of animal and vegetable matter, is absorbed from the air by plants in photosynthesis, and is used in the carbonation of beverages
Examples of carbon dioxide in a Sentence
Recent Examples on the Web
Mosquitoes are drawn to standing water and the carbon dioxide, heat, and sweat from guests.
—
Sharon Wu,
USA Today,
4 July 2026
Air exposure caused the concrete to form the mineral calcite by reacting with carbon dioxide.
—
Georgina Jedikovska,
Interesting Engineering,
3 July 2026
But thanks to those same emissions, the health of the ocean is in decline, reducing its ability to absorb carbon dioxide.
—
Victor Tangermann,
Futurism,
2 July 2026
Both died of carbon dioxide poisoning, the same cause that had ended Sealab III.
—
Bill Gourgey,
Popular Science,
2 July 2026
See All Example Sentences for carbon dioxide
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Sharon Wu,
USA Today,
4 July 2026
Air exposure caused the concrete to form the mineral calcite by reacting with carbon dioxide.
—
Georgina Jedikovska,
Interesting Engineering,
3 July 2026
But thanks to those same emissions, the health of the ocean is in decline, reducing its ability to absorb carbon dioxide.
—
Victor Tangermann,
Futurism,
2 July 2026
Both died of carbon dioxide poisoning, the same cause that had ended Sealab III.
—
Bill Gourgey,
Popular Science,
2 July 2026
See All Example Sentences for carbon dioxide
Cite this Entry
“Carbon dioxide.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/carbon%20dioxide. Accessed 5 Jul. 2026.
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