Nitratine
Pronunciation : Ni"tra*tine
Part of Speech : n.
Definition : Defn: 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.
(Min.)
Source : Webster's Unabridged Dictionary, 1913