Nitrous

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.

Adj.

1.

nitrous - of or containing nitrogen; "nitric acid" Synonyms: azotic, nitric

atomic number 7, azotic, N, nitric, nitrogen