nitrogen oxide


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

Example Sentences

Recent Examples on the Web The stricter rules will affect model year 2027–2032 vehicles and deal with carbon dioxide, nitrogen oxide, and other greenhouse gas emissions. Sebastian Blanco, Car and Driver, 10 Apr. 2023 The result is an increase in emissions of greenhouse gasses, sulfur dioxide, fine particulate matter and nitrogen oxides, study authors say. Dorany Pineda, Los Angeles Times, 30 Mar. 2023 The governing coalition wants to cut emissions of pollutants, predominantly nitrogen oxide and ammonia, by 50% nationwide by 2030. Mike Corder, The Christian Science Monitor, 16 Mar. 2023 Particulate matter is typically caused by industries and nitrogen oxide is smog. Sriya Reddy, Dallas News, 8 Mar. 2023 Burning fossil fuels also emits harmful pollutants like sulfur dioxide, ozone, nitrogen oxides and soot, which can cause health problems like asthma, bronchitis and lung cancer. Clare Mulroy, USA TODAY, 24 Feb. 2023 Acid rain happens when sulfur dioxide and nitrogen oxides are emitted into the atmosphere and moved by wind and air currents, the EPA's website says. Haadiza Ogwude, The Enquirer, 17 Feb. 2023 Wildfire smoke can contain pollutants such as ozone, volatile organic compounds, carbon monoxide, nitrogen oxide and trace metals, according to the LAO report. Claire Hao, San Francisco Chronicle, 14 Nov. 2022 See More

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 31 May. 2023.

Kids Definition

nitrogen oxide

: any of various oxides of nitrogen: as

More from Merriam-Webster on nitrogen oxide

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