'Nitratine' definitions:

Definition of 'Nitratine'

From: GCIDE

Nitratine \Ni"tra*tine\, n. (Min.) A mineral occurring in transparent crystals, usually of a white, sometimes of a reddish gray, or lemon-yellow, color; native sodium nitrate. It is used in making nitric acid and for manure. Called also soda niter. [1913 Webster]