nitrogen oxide


Definition of nitrogen oxide

: any of several oxides of nitrogen most of which are produced in combustion and are considered to be atmospheric pollutants: such as

Examples of nitrogen oxide in a Sentence

Recent Examples on the Web

But on the road, the cars released up to 40 times more nitrogen oxides than U.S. regulations allowed. Maxine Joselow, Scientific American, "VW Emissions Cheating Scandal Increased Children’s Pollution Exposure," 17 July 2019 And that means a more efficient engine and one that produces less nitrogen oxide. Jonathan M. Gitlin, Ars Technica, "Swapping spark plugs for nanopulses could boost engine efficiency by 20%," 26 June 2019 The plants exceed limits for safe amounts of smog-inducing nitrogen oxide emissions by dozens of tons on hot summer days, when air quality is typically worst. Scott Dance,, "Maryland petitions interstate panel to help reduce pollution blowing in from Pennsylvania coal plants," 14 June 2019 While the state data shows that volatile organic compounds from the oil and gas industry decreased between 2011 and 2017, the levels of nitrogen oxides have increased as oil and gas production surged in recent years. Bruce Finley, The Denver Post, "Colorado proposes new controls on oil and gas industry in effort to combat air pollution," 29 July 2019 Vehicles are responsible for around half of harmful nitrogen oxide air emissions in the British capital, the mayor's office said in April. Amy Woodyatt, CNN, "London mayor Sadiq Khan announces car-free day to tackle pollution crisis," 20 June 2019 Effects of acid rain Sulfur dioxide and nitrogen oxides are not primary greenhouse gases that contribute to global warming, one of the main effects of climate change; in fact, sulfur dioxide has a cooling effect on the atmosphere. National Geographic, "Acid rain, explained," 12 June 2019 Similar trading platforms have in the past reduced industrial emissions of sulphur dioxide and nitrogen oxides in the US. Kuwar Singh, Quartz India, "India’s Gujarat state launches the world’s first programme to trade particulate air pollutant quotas," 5 June 2019 Microscopic particulate matter, sulfur dioxide, and nitrogen oxides emitted by things like coal plants worsen respiratory conditions as well as heart diseases. Scott K. Johnson, Ars Technica, "This is your brain on air pollution," 30 Aug. 2018

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

1868, in the meaning defined above

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Last Updated

20 Aug 2019

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The first known use of nitrogen oxide was in 1868

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to make or get by devious means

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