ni·trous /ˈnaɪtrəs/
  (a.)氮的,含氮的,硝石的
  ni·trous /ˈnaɪtrəs/ 形容詞
  亞硝的
  Ni·trous a.
  1. Of, pertaining to, or containing, niter; of the quality of niter, or resembling it.
  2. Chem. Of, pertaining to, or designating, any one of those compounds in which nitrogen has a relatively lower valence as contrasted with nitric compounds.
  Nitrous acid Chem., a hypothetical acid of nitrogen HNO2, not known in the free state, but forming a well known series of salts, viz., the nitrites.
  Nitrous oxide. See Laughing gas.
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  nitrous
       adj : of or containing nitrogen; "nitric acid" [syn: azotic, nitric]