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
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Scientists found that the women who were exposed to higher levels of nitrogen dioxide and inhalable particulate pollution — two prevalent forms of air pollution — during their second trimester were nearly four times as likely to experience depression up to 3 years after their pregnancy. Tony Briscoe, Los Angeles Times, 5 Oct. 2024 Burning it for use emits a dangerous pollutant, nitrogen dioxide, into homes. Ben Jealous, The Mercury News, 8 Aug. 2024 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 See all Example Sentences for nitrogen dioxide 

Word History

First Known Use

1869, in the meaning defined above

Time Traveler
The first known use of nitrogen dioxide was in 1869

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 15 Nov. 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

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