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

The plant is 25 percent more efficient than the previous waste-incineration facility and will capture its carbon dioxide emissions, in line with Denmark’s ambitious goal to become carbon-neutral by 2050. National Geographic, "How pigeons landed in cities, and more breakthroughs," 12 June 2019 Transportation accounts for about one-fifth of carbon dioxide emissions worldwide, according to the World Bank. Jack Ewing, New York Times, "The Car Industry Is Under Siege," 6 June 2019 In 2015, Stovall and Alton gave up their car for 90 days in order to lower carbon dioxide emissions, and by 2018, the two had given up their car entirely in favor of bicycles. Steve Schering, chicagotribune.com, "Remembering Sally Stovall: 'Any green initiative, she's got her fingerprints all over it'," 3 June 2019 That means that the MesseTurm could digest as much as 1.5 tons of carbon dioxide an hour. David Grossman, Popular Mechanics, "Could We Re-Engineer A/Cs To Help Battle Climate Change?," 30 Apr. 2019 Analysis of data from NOAA also suggests the growth rate of carbon dioxide in the atmosphere is speeding up. Dino Grandoni, Washington Post, "The Energy 202: Scott Pruitt takes another significant policy step as controversies swirl," 8 June 2018 Scientists have found that the algae thrive in warmer waters and increased carbon dioxide levels. Lindsey Bever, The Seattle Times, "Protesters run Florida governor out of campaign rally," 18 Sep. 2018 The proposal would tax businesses such as oil and coal companies responsible for the carbon dioxide that burns off into the atmosphere. Timothy Puko, WSJ, "Former Fed Leaders, Economists Rally Around Carbon Tax," 16 Jan. 2019 The remaining issue is that, at the conditions involved in solar thermal plants, the copper on the material would react with the carbon dioxide, forming a copper oxide and releasing carbon monoxide. John Timmer, Ars Technica, "New material could up efficiency of concentrated solar power," 19 Oct. 2018

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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Statistics for carbon dioxide

Last Updated

16 Jun 2019

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Time Traveler for carbon dioxide

The first known use of carbon dioxide was in 1867

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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

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More from Merriam-Webster on carbon dioxide

Rhyming Dictionary: Words that rhyme with carbon dioxide

Spanish Central: Translation of carbon dioxide

Britannica.com: Encyclopedia article about carbon dioxide

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