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

The plants remaining in Vistra’s portfolio also emitted about 60% of the current fleet’s emissions of heat-trapping carbon dioxide and smog-forming nitrogen dioxide, the analysis found. Michael Hawthorne, chicagotribune.com, "A Texas company is closing 4 Illinois coal plants but plans to keep some of its dirtiest units running," 20 Aug. 2019 Of the six, three actually increased in 2017: carbon monoxide, nitrogen dioxide and two measures of particulate matter pollution. Seth Borenstein, The Denver Post, "Trump administration fact check: Environment, VA, Russia and jobs," 13 July 2019 Stuttgart and Dusseldorf are appealing lower-court rulings in favor of DUH that said bans on driving diesel cars must be considered as part of any plan to bring down levels of harmful nitrogen dioxide. Elisabeth Behrmann, Bloomberg.com, "How a German Court Case Could Accelerate Diesel's End," 21 Feb. 2018 Last year, the coal plants emitted 32,492 tons of sulfur dioxide and 17,330 tons of nitrogen dioxide, according to federal records. Michael Hawthorne, chicagotribune.com, "Illinois is moving away from coal, despite Trump bailout of struggling industry," 25 June 2019 More than two million Londoners live in areas that exceed legal limits for nitrogen dioxide -- NO2-- including more than 400,000 children under the age of 18, according to the mayor's office. Amy Woodyatt, CNN, "London mayor Sadiq Khan announces car-free day to tackle pollution crisis," 20 June 2019 Air-quality standards have also driven U.S. emissions of nitrogen dioxide down 50 percent in the same time period. National Geographic, "Acid rain, explained," 12 June 2019 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

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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More Definitions for nitrogen dioxide

nitrogen dioxide

noun

Medical Definition of nitrogen dioxide

: a poisonous strongly oxidizing reddish brown gas NO2