nitrogen dioxide


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

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Other pollutants are in the air, including sulphur dioxide, formed by fossil fuel combustion, carbon monoxide and nitrogen dioxide, formed by emissions from motor vehicles, gas heaters and cigarette smoke, and ground-level ozone, formed by smog. Christine Clarridge, The Seattle Times, "Seattle air quality readings vary. Here’s how to interpret them.," 21 Aug. 2018 This tends to undermine the appeal of diesel, which releases less carbon dioxide per mile than gasoline but emits more nitrogen dioxide and particles. Greg Ip, WSJ, "Business’s Climate Challenge: Getting Customers to Pay," 5 Dec. 2018 At the same time his federal regulators plan to tighten emission limits on pollutants such as nitrogen dioxide and small particles. Greg Ip, WSJ, "Business’s Climate Challenge: Getting Customers to Pay," 5 Dec. 2018 The plan, known as Madrid Central, is an attempt to lower the city’s nitrogen dioxide levels, which have exceeded European limits since 2010 and are thought to cause around 3,000 premature deaths per year, according to one study. Jon Porter, The Verge, "Madrid’s ban on polluting vehicles cuts traffic by nearly 32 percent in some areas," 3 Dec. 2018 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 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

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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The first known use of nitrogen dioxide was in 1869

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nitrogen dioxide


Medical Definition of nitrogen dioxide

: a poisonous strongly oxidizing reddish brown gas NO2

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using a distributed computer network

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