The Collaborative International Dictionary
soda niter
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.
Wiktionary
soda niter
n. sodium nitrate
WordNet
soda niter
n. (NaNO3) used especially as a fertilizer and explosive [syn: sodium nitrate]
Usage examples of "soda niter".
He had pastes to turn the hair blond, a mixture of green ilex, rye, white horehound, soda niter, alum, and yarrow.