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 eruptions could have spewed enough sulfur dioxide and carbon dioxide into the air to cause a massive environmental catastrophe that the dinosaurs, and many other species, couldn’t survive. Katherine Long, The Seattle Times, "UW’s new provost plumbs one of Earth’s most fascinating mysteries," 22 Oct. 2018 Additionally, Venus’s atmosphere is mainly carbon dioxide and thick clouds of sulfuric acid cover the entire planet. Fox News, "NASA eyes stunning 'cloud city' airship concept to explore Venus," 16 Oct. 2018 The animal waste in the lagoons undergoes anaerobic digestion, where microorganisms break down many of the substances into carbon dioxide and methane. Umair Irfan, Vox, "Florence dropped so much rain that hog waste is spilling out of lagoons," 18 Sep. 2018 In addition, the decomposition of the permafrost also releases toxic gases, otherwise known as greenhouse gases, like carbon dioxide and methane, which accelerate climate change and make the planet increasingly warmer. Elly Belle, Teen Vogue, "Arctic Wolf Spiders Are Getting Bigger and It Could Slow Part of Climate Change," 24 July 2018 Over time, methane in the atmosphere breaks down into carbon dioxide and water. Rachel Becker, The Verge, "How to capture the eerie nighttime clouds of climate change," 6 July 2018 And someone with a higher resting heart rate produces more carbon dioxide and more lactic acid, attracting even more mosquitos, says Day. Mackenzie Wagoner, Vogue, "Here’s Why You Are a Mosquito Magnet," 5 July 2018 Not least among these could be a complete reduction in carbon dioxide and other emissions that contribute to global warming and sea pollution during use. Megan Geuss, Ars Technica, "A hydrogen-powered research boat has many advantages over diesel, lab says," 5 July 2018 About a dozen employees of a meatpacking business north of Bridgeport were hospitalized Monday morning after firefighters responded to a report of a leak of carbon dioxide and carbon monoxide, according to the Chicago Fire Department. Elvia Malagon, chicagotribune.com, "About a dozen people hospitalized after carbon monoxide leak at Southwest Side business," 2 July 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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Last Updated

1 Dec 2018

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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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