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
The Biden administration had calculated that an end to federal coal sales would reduce emissions by the equivalent of 293 million tons (266 million metric tonnes) of carbon dioxide annually.
—
Sydney Lake, Fortune, 8 July 2025
On Earth, where tectonic activity constantly exposes fresh rock to the atmosphere, carbonate minerals like limestone form when rock reacts with water and carbon dioxide (CO2).
—Victoria Corless, Space.com, 4 July 2025
Why Big Tech and Big Oil Are Betting on Carbon Capture
According to a 2024 Newsweek report, tech giants like Microsoft, Alphabet, Meta, and Salesforce are aggressively investing in carbon dioxide removal technologies to meet their net-zero targets and hedge against future climate risks.
—Dianne Plummer, Forbes.com, 4 July 2025
Even in those earliest of gloomy days, oxygen — the element O — was all over the place, bound up in molecules like water vapor and quartz and carbon dioxide.
—Laura Poppick, Rolling Stone, 30 June 2025
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Sydney Lake, Fortune, 8 July 2025
On Earth, where tectonic activity constantly exposes fresh rock to the atmosphere, carbonate minerals like limestone form when rock reacts with water and carbon dioxide (CO2).
—Victoria Corless, Space.com, 4 July 2025
Why Big Tech and Big Oil Are Betting on Carbon Capture
According to a 2024 Newsweek report, tech giants like Microsoft, Alphabet, Meta, and Salesforce are aggressively investing in carbon dioxide removal technologies to meet their net-zero targets and hedge against future climate risks.
—Dianne Plummer, Forbes.com, 4 July 2025
Even in those earliest of gloomy days, oxygen — the element O — was all over the place, bound up in molecules like water vapor and quartz and carbon dioxide.
—Laura Poppick, Rolling Stone, 30 June 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 24 Jul. 2025.
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