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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These are microscopic vessels where oxygen and nutrients leave the bloodstream to feed the tissues, and carbon dioxide (a metabolic waste product) moves in.
—
Bryant Stamford, Louisville Courier Journal, 2 Oct. 2025
The process uses heat to convert common minerals such as slow-weathering silicates into materials that permanently sequester atmospheric carbon dioxide.
—Georgina Jedikovska, Interesting Engineering, 29 Sep. 2025
The key to this balance is plate tectonics, which regulate the amount of atmospheric carbon dioxide via the carbon-silicate cycle.
—Stefanie Waldek, Space.com, 24 Sep. 2025
China's carbon dioxide emissions from its power sector fell by almost 3% during the first half of this year as its growth in solar power matched the rise in electricity demand.
—Dinah Voyles Pulver, USA Today, 24 Sep. 2025
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Bryant Stamford, Louisville Courier Journal, 2 Oct. 2025
The process uses heat to convert common minerals such as slow-weathering silicates into materials that permanently sequester atmospheric carbon dioxide.
—Georgina Jedikovska, Interesting Engineering, 29 Sep. 2025
The key to this balance is plate tectonics, which regulate the amount of atmospheric carbon dioxide via the carbon-silicate cycle.
—Stefanie Waldek, Space.com, 24 Sep. 2025
China's carbon dioxide emissions from its power sector fell by almost 3% during the first half of this year as its growth in solar power matched the rise in electricity demand.
—Dinah Voyles Pulver, USA Today, 24 Sep. 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 4 Oct. 2025.
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