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 The state environmental quality agency said the new permit includes more stringent emission limits to reduce pollutants like nitrogen oxides, carbon monoxide and volatile organic compounds. Sarah Lapidus, The Arizona Republic, 2 July 2024 In an email to The Star, spokesperson Kaley Bohlen said that the company’s emissions of nitrogen oxide, a family of gasses that contribute to smog, have decreased by 88% since 2005. Natalie Wallington, Kansas City Star, 27 June 2024 When operating on hydrogen, the Tomahawk keeps combustion below 1,300°F, which prevents the production of nitrogen oxides (NOx), which are greenhouse gases. Chris Gallagher, USA TODAY, 6 June 2024 Connecticut’s air quality will also see a massive improvement, as gas, oil and propane burned inside of buildings generates eight times more smog-forming nitrogen oxide pollution than all of the state’s power plants combined. Tenaya Taylor, Hartford Courant, 20 June 2024 See all Example Sentences for nitrogen oxide 

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'nitrogen oxide.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1868, in the meaning defined above

Time Traveler
The first known use of nitrogen oxide was in 1868

Dictionary Entries Near nitrogen oxide

Cite this Entry

“Nitrogen oxide.” Dictionary, Merriam-Webster, Accessed 20 Jul. 2024.

Kids Definition

nitrogen oxide

: any of various oxides of nitrogen: as

More from Merriam-Webster on nitrogen oxide

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