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
Straight channels lead to circular sensor regions that turn red in the presence of nitrogen dioxide.
—
IEEE Spectrum, 29 Jan. 2013
In addition to smoke and soot, the space agency detected large plumes of harmful gases emanating from the wildfires, including lung-irritating nitrogen dioxide and cancer-causing formaldehyde.
—Tony Briscoe, Los Angeles Times, 16 Jan. 2025
The researchers suggest that these white lights arise due to a combination of heating in the ionosphere due to the surrounding aurora, as well as the chemiluminescence of some other gases in the atmosphere, possibly nitrogen dioxide.
—Yaakov Katz, Newsweek, 13 Jan. 2025
The waiver can be used to rein in toxic, smog-causing pollutants like soot, nitrogen dioxide and ozone that lead to asthma and lung disease.
—Coral Davenport, New York Times, 14 Dec. 2024
See All Example Sentences for nitrogen dioxide
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
IEEE Spectrum, 29 Jan. 2013
In addition to smoke and soot, the space agency detected large plumes of harmful gases emanating from the wildfires, including lung-irritating nitrogen dioxide and cancer-causing formaldehyde.
—Tony Briscoe, Los Angeles Times, 16 Jan. 2025
The researchers suggest that these white lights arise due to a combination of heating in the ionosphere due to the surrounding aurora, as well as the chemiluminescence of some other gases in the atmosphere, possibly nitrogen dioxide.
—Yaakov Katz, Newsweek, 13 Jan. 2025
The waiver can be used to rein in toxic, smog-causing pollutants like soot, nitrogen dioxide and ozone that lead to asthma and lung disease.
—Coral Davenport, New York Times, 14 Dec. 2024
See All Example Sentences for nitrogen dioxide
Cite this Entry
“Nitrogen dioxide.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/nitrogen%20dioxide. Accessed 4 Mar. 2025.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
Share