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

However, the paper's authors noted that between 2005 and 2015, policies focused on reducing emissions from power plants and industry actually failed to do anything in the case of nitrogen oxide, another potent pollutant. Megan Geuss, Ars Technica, "In China, replacing coal and biomass stoves has saved lives," 21 Nov. 2018 Many different air pollutants can impact health — nitrogen oxide, carbon monoxide, and ozone, among them. Umair Irfan, Vox, "Why India’s air pollution is so horrendous," 31 Oct. 2018 Diesels can emit more nitrogen oxide, which is bad for people’s health, but less CO2. David Mchugh, The Seattle Times, "Climate goals mean Europe will overtake U.S. in electric cars," 2 Oct. 2018 Volkswagen made promises to a variety of countries to build more electric vehicles in the wake of its global diesel scandal in which millions of diesel cars were found to be emitting nitrogen oxide in excess of legal limits. Megan Geuss, Ars Technica, "Chinese firm will build battery factory in Germany to supply BMW, Volkswagen," 9 July 2018 At other times, the cars emitted far more nitrogen oxide, a lung irritant that also causes smog, than permitted. Jack Ewing, New York Times, "Audi Chief Executive Rupert Stadler Arrested Over Diesel Scandal," 18 June 2018 Along with measuring carbon dioxide emissions, the USGS report says that fossil fuel extraction on federal lands contributes to 7.3 percent of the nation's methane emissions and 1.5 percent of the nation's nitrogen oxide emissions. Megan Geuss, Ars Technica, "Drilling on US public lands causes 24 percent of the nation’s CO2 emissions," 27 Nov. 2018 State regulators there have been pushing for more stringent standards for nitrogen oxide, or NOx, emissions for commercial trucks. Jennifer Smith, WSJ, "FedEx to Add 1,000 Electric Vehicles to Parcel Fleet," 20 Nov. 2018 The nitrogen oxides produced by these cars are estimated to cause around 23,500 early deaths in the UK alone, where seven million such vehicles are thought to still be in use. Jon Porter, The Verge, "BMW, Daimler, and VW probed by EU over possible cartel activity," 18 Sep. 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.

See More

First Known Use of nitrogen oxide

1868, in the meaning defined above

Keep scrolling for more

Learn More about nitrogen oxide

Share nitrogen oxide

Statistics for nitrogen oxide

Last Updated

19 Feb 2019

Look-up Popularity

Time Traveler for nitrogen oxide

The first known use of nitrogen oxide was in 1868

See more words from the same year

More from Merriam-Webster on nitrogen oxide Encyclopedia article about nitrogen oxide

Comments on nitrogen oxide

What made you want to look up nitrogen oxide? Please tell us where you read or heard it (including the quote, if possible).


excited commotion or publicity

Get Word of the Day daily email!

Test Your Vocabulary

What did you just call me?! A Quiz

  • rows-of-various-emoji
  • If a member of the audience describes your speech as bombastic, does that person mean it is:
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!


Test Your Knowledge - and learn some interesting things along the way.


Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!