'Nitrous acid' definitions:
Definition of 'nitrous acid'
From: WordNet
noun
An unstable inorganic acid known only in solution and as nitrite salts
Definition of 'Nitrous acid'
From: 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]