HNO2

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Nitrous \Ni"trous\, a. [L. nitrosus full of natron: cf. F.
     nitreux. See {Niter}.]
     1. Of, pertaining to, or containing, niter; of the quality of
        niter, or resembling it.
        [1913 Webster]
  


     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.
        [1913 Webster]
  
     {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}.
        [1913 Webster]