(Chem.) A white crystalline semitransparent salt; potassium nitrate; saltpeter. See Saltpeter.
2.
(Chem.) Native sodium carbonate; natron. (Obs.) "For though thou wash thee with niter, and take thee much soap, yet thine iniquity is marked before me."
Cubic niter, a deliquescent salt, sodium nitrate, found as a native incrustation, like niter, in Peru and Chile, whence it is known also as Chile saltpeter.
Niter bush (Bot.), a genus (Nitraria) of thorny shrubs bearing edible berries, and growing in the saline plains of Asia and Northern Africa.
... fell at Peshawur, India, June, 1893, during a storm: substance that looked like crystallized niter, and that tasted like sugar (Nature, ... — The Book of the Damned • Charles Fort
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