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 And according to the University Corporation for Atmospheric Research’s Center for Science Education, carbon dioxide promotes photosynthesis, in which plants and some microbes create food. Danielle Zickl, Popular Mechanics, "Stop Tossing Your Banana Peels on the Ground," 13 Sep. 2019 In the 20 years after it is released, the powerful greenhouse gas traps over 80 times more heat in the atmosphere than carbon dioxide does. S.r.m., The Economist, "Energy companies are divided over a plan to scrap methane-emission rules," 9 Sep. 2019 The carbon dioxide that makes water bubbly turns into carbonic acid in the mouth and can be detrimental to your teeth's health. Kendall Trammell, CNN, "Can I get a hangover from White Claw? Asking for a friend," 7 Sep. 2019 Over all, carbon dioxide is the most significant greenhouse gas, but methane is a close second. New York Times, "Curbs on Methane, Potent Greenhouse Gas, to Be Relaxed in U.S.," 29 Aug. 2019 The lungs are where the air exchange happens where carbon dioxide leaves your blood stream and oxygen enters it. San Diego Union-Tribune, "Patriots’ David Andrews seems likely to miss season after blood clot scare," 27 Aug. 2019 But inside the reactor, carbon dioxide is being decomposed to produce oxygen at temperatures up to 600 degrees Celsius. The News-review, oregonlive.com, "Southern Oregon technology may help astronauts breathe easier," 24 Aug. 2019 Those types of pollutants were curtailed by environmental policies, while carbon dioxide remained unregulated for decades. Anchorage Daily News, "Extreme climate change has arrived in America. Here are the fastest-warming places.," 13 Aug. 2019 The love for carbon dioxide can also put pregnant people at more risk for mosquito bites, since pregnant people tend to exhale 21 percent more CO2 than non-pregnant people of the same age and size. Elizabeth King, Allure, "Why Mosquitos Bite Some People More Than Others," 8 Aug. 2019

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

3 Nov 2019

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

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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