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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
As soaring fossil fuel emissions continue to heighten global warming, multiple projects seeking to remove carbon dioxide from the air have been launched across Los Angeles Country — an effort that project developers say is destined to make Southern California a global leader in climate adaptation.
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Hayley Smith, Los Angeles Times, 23 June 2024
Share [Findings] The decreasing transpiration of plants, a result of rising carbon dioxide levels, was partly to blame for recent heat waves in northern latitudes.
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Rafil Kroll-Zaidi, Harper's Magazine, 19 June 2024
These devices may emit carbon dioxide (going back to the earlier tip to make sure your detectors are ready to go).
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Sarah Bowman, The Indianapolis Star, 12 June 2024
Traditional embalming, cremation and burials have a large environmental footprint — the carbon dioxide emitted from one cremation is equivalent to a nearly 500-mile car ride.
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Sophia Liang, The Courier-Journal, 12 June 2024
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These examples are programmatically compiled from various online sources to illustrate current usage of the word 'carbon dioxide.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
Word History
First Known Use
1867, in the meaning defined above
Dictionary Entries Near carbon dioxide
Cite this Entry
“Carbon dioxide.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/carbon%20dioxide. Accessed 4 Jul. 2024.
Kids Definition
carbon dioxide
noun
: a heavy colorless gas CO2 that is formed especially by the burning and breaking down of organic substances (as in animal respiration), is absorbed from the air by plants in photosynthesis, and has many industrial uses
Medical Definition
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
More from Merriam-Webster on carbon dioxide
Britannica.com: Encyclopedia article about carbon dioxide
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