• Nitrous

    Adjective

    nitrous
    1. (chemistry) of, relating to, or derived from nitrogen, especially in which the valence of the nitrogen is lower than that of a corresponding nitric species
    2. (chemistry) of, or relating to nitrous acid or its derivatives
    3. (mycology, biology) having a sharp odor like ammonia or nitric acid

    Full definition of nitrous

    Noun

    nitrous

    (uncountable)
    1. (dentistry, informal) Nitrous oxide.
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