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nitrogen dioxide
noun
: a toxic reddish brown gas NO2 that is a strong oxidizing agent, is produced by combustion (as of fossil fuels), and is an atmospheric pollutant (as in smog)
Examples of nitrogen dioxide in a Sentence
Recent Examples on the Web
Without proper ventilation, the fumes from that equipment can build up high levels of poisonous gases such as carbon monoxide and nitrogen dioxide.
—
Tribune News Service, The Mercury News, 10 Aug. 2024
Disadvantaged communities are exposed to more air pollution Breathing in air pollution, including particulate matter, nitrogen dioxide, and ozone, can be bad for your health.
—
Brittany Trang, STAT, 9 Aug. 2024
The area also had no carbon monoxide, nitrogen dioxide or PM2.5 days throughout the year.
—
Laura Daniella Sepulveda, The Arizona Republic, 4 June 2024
Instruments on the aircraft will be measuring carbon dioxide, methane, nitrogen dioxide, formaldehyde and ozone.
—
Dillon Mullan, Baltimore Sun, 17 June 2024
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These examples are programmatically compiled from various online sources to illustrate current usage of the word 'nitrogen dioxide.' 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
1869, in the meaning defined above
Dictionary Entries Near nitrogen dioxide
Cite this Entry
“Nitrogen dioxide.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/nitrogen%20dioxide. Accessed 19 Aug. 2024.
Kids Definition
nitrogen dioxide
noun
: a reddish brown poisonous gas that is an air pollutant formed from automobile exhausts
Medical Definition
nitrogen dioxide
noun
: a poisonous strongly oxidizing reddish brown gas NO2
More from Merriam-Webster on nitrogen dioxide
Britannica.com: Encyclopedia article about nitrogen dioxide
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