nitrous

American  

[nahy-truhs] / ˈnaɪ trəs /

adjective

Chemistry.

1. pertaining to compounds obtained from niter, usually containing less oxygen than the corresponding nitric compounds.

2. containing nitrogen, usually in the trivalent state.

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nitrous British  

/ ˈnaɪtrəs /

adjective

1. of, derived from, or containing nitrogen, esp in a low valency state

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nitrous Scientific  

/ nī′trəs /

1. Containing nitrogen, especially nitrogen with a valence of 3.

2. Compare nitric

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Other Word Forms

• nonnitrous
  adjective

Etymology

Origin of nitrous

First recorded in 1595–1605, nitrous is from the Latin word nitrōsus full of natron. See nitroso-

Example Sentences

See Examples For:

nitrous

A 2024 report by the United Nations Environment Programme and the Food and Agriculture Organization warned that rising nitrous oxide emissions linked to fertiliser use are threatening climate goals.

From Barron's ● Jun. 16, 2026

Banned items include weapons, fireworks, flares, gas canisters, laser pens, camping chairs, umbrellas, flagpoles, air horns, megaphones, nitrous oxide, and excessive food and cigarettes security would think was more than "personal use".

From BBC ● Jun. 10, 2026

High levels of nitrous oxide in maternity units has affected other hospital trusts across England.

From BBC ● May 18, 2026

The centers are also adding nitrous oxide, or laughing gas, for intrauterine device insertions.

From The Wall Street Journal ● Mar. 1, 2026

It wasn’t until 1846 that anyone got around to finding a practical use for nitrous oxide, as an anesthetic.

From "A Short History of Nearly Everything" by Bill Bryson