ni·​trous | \ ˈnī-trəs How to pronounce nitrous (audio) \

Definition of nitrous

 (Entry 1 of 2)

: nitrous oxide He began huffing nitrous by the case, causing vivid hallucinations.— David Peisner



Definition of nitrous (Entry 2 of 2)

: of, relating to, or containing niter

Examples of nitrous in a Sentence

Recent Examples on the Web: Noun How effective nitrous is for alleviating pain is highly variable. Alice Callahan, New York Times, "Epidurals Are Just One of Many Options for Childbirth Pain Relief," 17 Apr. 2020 The modifications include an engine that makes 570 rear-wheel horsepower, before nitrous, and which has a custom nitrous kit from Induction Solutions. Sebastian Blanco, Car and Driver, "Dan Parker Aims to Be World's Fastest Blind Man in Corvette at 201 MPH," 21 Mar. 2020 Actually, nitrous is making a comeback in U.S. maternity circles. Marie Mccullough,, "Laughing gas makes a comeback for women in labor - like Kate Middleton," 16 May 2018 The Birth Center in Bryn Mawr charges patients $25 to try nitrous, and $250 to use it at will during labor. Marie Mccullough,, "Laughing gas makes a comeback for women in labor - like Kate Middleton," 16 May 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'nitrous.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of nitrous


1977, in the meaning defined above


1583, in the meaning defined above

History and Etymology for nitrous


New Latin nitrosus, from Latin, full of natron, from nitrum natron — more at niter

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Time Traveler for nitrous

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The first known use of nitrous was in 1583

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Cite this Entry

“Nitrous.” Dictionary, Merriam-Webster, Accessed 26 Feb. 2021.

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More Definitions for nitrous


ni·​trous | \ ˈnī-trəs How to pronounce nitrous (audio) \

Medical Definition of nitrous

: of, relating to, or containing nitrogen especially with a lower valence than in corresponding nitric compounds

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