nitrogen dioxide

noun

Definition of nitrogen dioxide 

: a toxic reddish brown gas NO2 that is a strong oxidizing agent, is produced by combustion (as of fossil fuels), and is an atmospheric pollutant (as in smog)

Examples of nitrogen dioxide in a Sentence

Recent Examples on the Web

Three German carmakers appear to have commissioned or supported a study in 2014 which exposed monkeys and humans to exhaust fumes and nitrogen dioxide, according to German media reports on Monday. Rick Noack, Washington Post, "German carmakers backed studies exposing people and monkeys to toxic car exhaust," 29 Jan. 2018 But it is linked to a slightly lower autism risk from exposure to one air pollutant: nitrogen dioxide. Nicholette Zeliadt, Washington Post, "Taking folic acid may lower the risk of autism and ease features of the condition," 2 Apr. 2018 Air in some 70 cities and towns in Germany fails to meet the E.U.’s nitrogen dioxide standards. Griff Witte, Washington Post, "Germans love their cars. They also love the environment. A diesel ban is forcing them to choose.," 18 Apr. 2018 The pods are climatically controlled and contain various levels of ozone, particulate matter, nitrogen dioxide, sulfur dioxide and carbon monoxide. Ceylan Yeginsu, New York Times, "How’s the Air in London? ‘We Should Be Worried’," 22 Apr. 2018 Another study financed by the group subjected 25 volunteers to low doses of nitrogen dioxide. Jack Ewing, New York Times, "Volkswagen Suspends Top Lobbyist Amid Inquiry Into Diesel Tests on Monkeys," 30 Jan. 2018 Pollution from nitrogen dioxide — the lung-irritating gas that diesel vehicles emit in abundance — is above the European Union’s legal levels in about 70 German cities and towns. Washington Post, "German court opens the way for bans of diesel vehicles, roiling a nation of car obsessives," 27 Feb. 2018 Diesel engines are the main emitters of nitrogen dioxide, which causes respiratory problems and has been linked to premature deaths. Karin Matussek, Bloomberg.com, "German Court Puts Millions of Diesel Cars at Risk of Bans," 27 Feb. 2018 Diesel engines are the main emitters of nitrogen dioxide, which causes respiratory problems and has been linked to premature deaths. Karin Matussek, Bloomberg.com, "German Court Puts Millions of Diesel Cars at Risk of Bans," 27 Feb. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'nitrogen 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 nitrogen dioxide

1869, in the meaning defined above

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Last Updated

13 Sep 2018

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The first known use of nitrogen dioxide was in 1869

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More Definitions for nitrogen dioxide

nitrogen dioxide

noun

Medical Definition of nitrogen dioxide 

: a poisonous strongly oxidizing reddish brown gas NO2

More from Merriam-Webster on nitrogen dioxide

Britannica.com: Encyclopedia article about nitrogen dioxide

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