nitrogen oxide

noun

: 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

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The Senate also passed two other resolutions that block California rules curbing tailpipe emissions and smog-forming nitrogen oxide pollution from trucks. Martha McHardy, MSNBC Newsweek, 24 May 2025 What's next: The Senate also voted Thursday to revoke waivers for California's heavy duty trucks and nitrogen oxide emission standards. Nadia Lopez, Axios, 22 May 2025 Another Biden-era rule would require Hunter and Huntington to add pollution-control devices that limit nitrogen oxide emissions — which, in addition to being terrible for human health, lead to hazy air and ruined views at Utah national parks including Zion and Canyonlands. Sammy Roth, Los Angeles Times, 8 May 2025 But Maher said Colorado is too prone to creating loopholes for the oil and gas industry, which accounts for 45% of nitrogen oxide emissions and 41% of volatile organic compound emissions released in the state. Noelle Phillips, Denver Post, 29 Apr. 2025 See All Example Sentences for nitrogen oxide

Word History

First Known Use

1868, in the meaning defined above

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

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Cite this Entry

“Nitrogen oxide.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/nitrogen%20oxide. Accessed 6 Jun. 2025.

Kids Definition

nitrogen oxide

noun
: any of various oxides of nitrogen: as

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