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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Pumping that much carbon dioxide into the air is of significant public interest, Gauger said.
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William Melhado, Sacbee.com, 6 June 2026
Another fascinating facet is that, like carbon dioxide, methane also has a surprisingly high abundance relative to water on 3I/ATLAS.
—Keith Cooper, Space.com, 5 June 2026
Coal fuel is a major producer of greenhouse gas emissions, chiefly carbon dioxide, driving climate change.
—Dan Vergano, Scientific American, 4 June 2026
In 2024, carbon dioxide emissions in advanced economies dropped to their lowest level in 50 years.
—Matthew Glasser, ABC News, 4 June 2026
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William Melhado, Sacbee.com, 6 June 2026
Another fascinating facet is that, like carbon dioxide, methane also has a surprisingly high abundance relative to water on 3I/ATLAS.
—Keith Cooper, Space.com, 5 June 2026
Coal fuel is a major producer of greenhouse gas emissions, chiefly carbon dioxide, driving climate change.
—Dan Vergano, Scientific American, 4 June 2026
In 2024, carbon dioxide emissions in advanced economies dropped to their lowest level in 50 years.
—Matthew Glasser, ABC News, 4 June 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 7 Jun. 2026.
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