carbon dioxide

noun

Definition of carbon dioxide

: 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 concern about climate change grows, nuclear power has gained new appeal, particularly on the left, for its promise as a supplement to wind and solar power in eliminating carbon dioxide emissions. Andrew Cockburn, Harper’s Magazine , 4 Jan. 2022 Cremation in this country produces 250,000 tons of carbon dioxide emissions each year. Mallory Mcduff, Wired, 2 Jan. 2022 The expansion of Vogtle beyond its two existing reactors promises decades of additional electricity generation without carbon dioxide emissions, which have been tied to climate change. Matt Kempner, ajc, 31 Dec. 2021 According to the report, a flight from Paris to Berlin creates at least six times the carbon dioxide emissions of a similar train journey. Ben Jones, CNN, 23 Dec. 2021 The Environmental Protection Agency on Monday announced strengthened limits on pollution from automobile tailpipes in a bid to reduce a major source of the carbon dioxide emissions that are heating the planet. New York Times, 20 Dec. 2021 The Climate Protection Program is a set of regulations that charge heavy polluters in the state for producing carbon dioxide emissions above certain limits. oregonlive, 10 Dec. 2021 The government expects the plant will power about 31,000 households and prevent 176,370 tons of carbon dioxide emissions from entering the atmosphere annually. Llewellyn King, Forbes, 10 Dec. 2021 Joosten estimates that, at present, the equivalent of 2 billion tons of carbon dioxide are released by peatlands every year. Washington Post, 16 Dec. 2021

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'carbon dioxide.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of carbon dioxide

1867, in the meaning defined above

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Time Traveler for carbon dioxide

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The first known use of carbon dioxide was in 1867

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Dictionary Entries Near carbon dioxide

carbon dichloride

carbon dioxide

carbon disulfide

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Statistics for carbon dioxide

Last Updated

7 Jan 2022

Cite this Entry

“Carbon dioxide.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/carbon%20dioxide. Accessed 17 Jan. 2022.

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More Definitions for carbon dioxide

carbon dioxide

noun

English Language Learners Definition of carbon dioxide

: a gas that is produced when people and animals breathe out or when certain fuels are burned and that is used by plants for energy

carbon dioxide

noun
carbon di·​ox·​ide | \ -dī-ˈäk-ˌsīd \

Kids Definition of carbon dioxide

: a heavy colorless gas that is formed by burning fuels, by the breakdown or burning of animal and plant matter, and by the act of breathing and that is absorbed from the air by plants in photosynthesis

carbon dioxide

noun

Medical Definition of carbon dioxide

: 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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