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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The team detected higher levels of carbon dioxide in these areas than in surrounding regions.
—
Victoria Corless, Space.com, 21 July 2025
Credits sold for about $25 each, and one credit equals one ton of carbon dioxide equivalents for one year.
—Noelle Phillips, Denver Post, 20 July 2025
The average passenger car emits around 400 grams of carbon dioxide per mile.
—Marshall Shepherd, Forbes.com, 20 July 2025
All told, these panels generate 1.27 million kilowatt-hours of energy annually—enough to power 175 American homes, offset 975 tons of carbon dioxide, and save the gardens more than $100,000 a year in energy costs.
—Kelsey Glennon, Southern Living, 19 July 2025
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Victoria Corless, Space.com, 21 July 2025
Credits sold for about $25 each, and one credit equals one ton of carbon dioxide equivalents for one year.
—Noelle Phillips, Denver Post, 20 July 2025
The average passenger car emits around 400 grams of carbon dioxide per mile.
—Marshall Shepherd, Forbes.com, 20 July 2025
All told, these panels generate 1.27 million kilowatt-hours of energy annually—enough to power 175 American homes, offset 975 tons of carbon dioxide, and save the gardens more than $100,000 a year in energy costs.
—Kelsey Glennon, Southern Living, 19 July 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 29 Jul. 2025.
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