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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
Neighborhoods downwind of warehouses, less than 5 miles (roughly 7 kilometers) away, saw a nearly 20 percent increase in nitrogen dioxide pollution on average compared to neighborhoods upwind of warehouses.
—Justine Calma, The Verge, 12 Sep. 2024
In the Sant Antoni superblock, pollutants such as nitrogen dioxide and particles called PM10 – both commonly found in vehicle exhaust – fell by 25% and 17% respectively, according to a 2021 report by the Barcelona Public Health Agency.
—Erika Page, The Christian Science Monitor, 5 Sep. 2024
According to the agency Transport for London, the ULEZ has helped to reduce roadside nitrogen dioxide concentrations by 53% in central London.
—Christine Ro, Forbes, 6 Sep. 2024
The study found, for instance, that nitrogen dioxide, or smog, is more prevalent in low-income pockets of East and West Oakland, which are boxed in by Interstates 80, 880, 580 and State Route 24.
—Lisa M. Krieger, The Mercury News, 7 Aug. 2024
See all Example Sentences for nitrogen dioxide
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 2 Oct. 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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