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 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 The carbon dioxide, upwards of 10 percent, must be stripped out and sequestered back in the reservoir at the GTP. Author: Elwood Brehmer, Anchorage Daily News, "Veteran industry engineer questions aspects of Alaska LNG plans," 6 July 2018 The University of South Florida is presenting a street-light system powered by solar and wind, while a second USF team has developed a process for turning the greenhouse gas carbon dioxide into fuel. Kevin Spear, OrlandoSentinel.com, "UCF, Yale, Vanderbilt and other schools compete over tomorrow's energy answers," 17 May 2018 Forests soak up vast amounts of the greenhouse gas carbon dioxide while pumping out oxygen, and forest loss around the world contributes a hefty 17 percent of the carbon emissions that drive climate change. Katarina Zimmer /, NBC News, "These tiny 'guardians' are helping protect the world's forests," 11 May 2018 Normal, healthy bacteria in the colon work to break down that food, and this naturally creates gases including hydrogen and carbon dioxide, according to the Cleveland Clinic. Carolyn L. Todd, SELF, "Does Lying Down After Eating Really Cause Gas?," 28 Mar. 2019 The specific kinds of lasers (carbon dioxide, or CO2, and erbium-YAG) and radio-frequency wands being promoted as vaginal wonders were first cleared by the FDA for reversing skin issues, like regrettable ink, wrinkles, and acne scars. Elizabeth Siegel, Allure, "Vaginal Rejuvenation Is on the Rise, But the Results Often Don't Live Up to the Hype," 27 Mar. 2019 The detectors can provide breakdowns of how much carbon dioxide, carbon monoxide, nitric oxide, nitrogen dioxide, ozone and particulate matter are in the environment. Travis Fedschun, Fox News, "Google Street View cars to be outfitted with pollution sensors to measure US, Europe air quality," 18 Sep. 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

21 Apr 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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