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 Christensen, the lead author, said the main cause of a recent increase in carbon dioxide emissions was economic growth in developing countries. Jamey Keaten, Anchorage Daily News, "Continued international procrastination will doom Earth to dramatic warming, UN says," 26 Nov. 2019 According to the International Air Transport Association, flights were responsible for 2.4 percent of global energy-related carbon dioxide emissions in 2018. Heather Hansman, Outside Online, "How to Go Green on Black Friday," 26 Nov. 2019 Cutting ship speeds by 20% could reduce carbon dioxide emissions from ships by 24%, according to the study, as well as reduce the amount of nitrogen and sulfur oxides released into the atmosphere. Haleluya Hadero And Brandon Miller, CNN, "Why slowing down ships could help save the planet," 25 Nov. 2019 But Saudi Aramco aims to continue raising its oil sales until 2050, the same year by which the U.N. panel said net carbon dioxide emissions would need to fall to zero if the world is to meet the 1.5 degree target. Adrian Croft, Fortune, "Banks Set to Cash in on the Saudi Aramco IPO Want You to Know They’re Still Serious About Climate Change," 14 Nov. 2019 The burning of fuels in India was responsible for 7% of global carbon dioxide emissions last year. Kuwar Singh, Quartz India, "Fossil fuel de-addiction may wipe out a big chunk of India’s government revenues," 14 Nov. 2019 For example, the U.S. goal — set by Barack Obama's administration — had been to reduce carbon dioxide emission in 2025 by 26% to 28% compared to 2005 levels. Fox News, "Trump can begin steps to pull US out of Paris climate deal," 4 Nov. 2019 For example, the U.S. goal — set under President Barack Obama — had been to reduce carbon dioxide emission in 2025 by 26% to 28% compared with 2005 levels. Seth Borenstein, chicagotribune.com, "U.S. notifies U.N. of official withdrawal from landmark 2015 Paris climate agreement," 4 Nov. 2019 For example, the U.S. goal — set by Barack Obama's administration — had been to reduce carbon dioxide emission in 2025 by 26% to 28% compared to 2005 levels. NBC News, "Trump administration kick-starts formal withdrawal from Paris climate agreement," 4 Nov. 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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Time Traveler for carbon dioxide

Time Traveler

The first known use of carbon dioxide was in 1867

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Statistics for carbon dioxide

Last Updated

1 Dec 2019

Cite this Entry

“Carbon dioxide.” The Merriam-Webster.com Dictionary, Merriam-Webster Inc., https://www.merriam-webster.com/dictionary/carbon%20dioxide. Accessed 10 December 2019.

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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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