Definition of nitrous in English:


Syllabification: ni·trous
Pronunciation: /ˈnītrəs


  • 1 Chemistry Of or containing nitrogen with a lower valence, often three. Compare with nitric.
    More example sentences
    • Similar to nitrous acid, nitric oxide gives rise to reactive nitrous anhydride that can induce nitrosative deamination of DNA bases.
  • 2Of nitrogen; nitrogenous: the effect of nitrous emissions on acid rain
    More example sentences
    • It was first synthesized in 1776 by Joseph Priestley and was named ‘diminished nitrous air.’


early 17th century: from Latin nitrosus 'nitrous'.

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Pronunciation: ˌkələrəˈto͝orə
elaborate ornamentation of a vocal melody