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
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In terms of environmental cleanup, these materials are capable of capturing greenhouse gases like carbon dioxide and removing heavy metals and antibiotics from wastewater.
—
Mrigakshi Dixit, Interesting Engineering, 28 Oct. 2025
Over the past decade, projected global emissions for 2040 have dropped from 50 billion tons to 30 billion tons of carbon dioxide annually, according to International Energy Agency forecasts—a reduction of more than 40%.
—Dave Smith, Fortune, 28 Oct. 2025
Instead, they are attracted to carbon dioxide, blood, and warmth—things that can be found anywhere one sleeps.
—Stacey Leasca, Travel + Leisure, 27 Oct. 2025
Here, much to the amazement of onlookers, sacrificial animals such as bulls would drop dead after breathing in noxious carbon dioxide fumes swirling up from below.
—Barry Neild, CNN Money, 27 Oct. 2025
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Mrigakshi Dixit, Interesting Engineering, 28 Oct. 2025
Over the past decade, projected global emissions for 2040 have dropped from 50 billion tons to 30 billion tons of carbon dioxide annually, according to International Energy Agency forecasts—a reduction of more than 40%.
—Dave Smith, Fortune, 28 Oct. 2025
Instead, they are attracted to carbon dioxide, blood, and warmth—things that can be found anywhere one sleeps.
—Stacey Leasca, Travel + Leisure, 27 Oct. 2025
Here, much to the amazement of onlookers, sacrificial animals such as bulls would drop dead after breathing in noxious carbon dioxide fumes swirling up from below.
—Barry Neild, CNN Money, 27 Oct. 2025
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 31 Oct. 2025.
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