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

Recent Examples on the Web
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Once gases, such as carbon dioxide (CO2) or nitrogen oxides (NOx), come into contact with the system, they are adsorbed onto the electrode surface. Georgina Jedikovska, Interesting Engineering, 20 Apr. 2026 The plant also emits nitrogen oxides, volatile organic compounds, carbon monoxide, ammonia and other hazardous pollutants. Noelle Phillips, Denver Post, 9 Apr. 2026 The acronym stands for diesel exhaust fluid, a solution that breaks down nitrogen oxides and significantly reduces emissions from diesel engines. Caleb Jacobs, The Drive, 18 Mar. 2026 Odisea is reportedly equipped with a twin-diesel propulsion system and a compact exhaust with a patented SCR system that significantly reduces nitrogen oxides (NOx) emissions. Rachel Cormack, Robb Report, 16 Mar. 2026 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 26 Apr. 2026.

Kids Definition

nitrogen oxide

noun
: any of various oxides of nitrogen: as

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