nitrous oxide

noun

: a colorless gas N2O that when inhaled produces loss of sensibility to pain preceded by exhilaration and sometimes laughter, that is used especially as an anesthetic in dentistry and as a fuel, and that is an atmospheric pollutant and greenhouse gas produced by combustion

called also laughing gas

compare nitric oxide

Examples of nitrous oxide in a Sentence

Recent Examples on the Web Nitrogen-fixing cereals would also avoid the problem of nitrous oxide wafting up from fertilized fields. Leigh Phillips, The Atlantic, 9 July 2024 Loading your audio article Milo Yiannopoulos, the former chief of staff for Kanye West, is alleging celebrity dentist Thomas Connelly provided the rapper with nitrous oxide for recreational use, which led to addiction. Evan Rosen, New York Daily News, 7 Aug. 2024 Three suspects were contacted during a call for service, and a man was seen using and being in possession of nitrous oxide. Anne Gelhaus, The Mercury News, 30 July 2024 According to prosecutors, the teen was struck by a nitrous oxide canister. Christina Hall, USA TODAY, 26 Apr. 2024 See all Example Sentences for nitrous oxide 

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'nitrous 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

1798, in the meaning defined above

Time Traveler
The first known use of nitrous oxide was in 1798

Dictionary Entries Near nitrous oxide

Cite this Entry

“Nitrous oxide.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/nitrous%20oxide. Accessed 17 Sep. 2024.

Kids Definition

nitrous oxide

noun
: a colorless gas that when inhaled causes loss of the ability to feel pain and sometimes produces laughter and is used especially in dentistry

called also laughing gas

Medical Definition

nitrous oxide

noun
: a colorless gas N2O that when inhaled produces loss of sensibility to pain preceded by exhilaration and sometimes laughter and is used especially as an anesthetic in dentistry

called also laughing gas

More from Merriam-Webster on nitrous oxide

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