Niter

n.	1.	(Chem.) A white crystalline semitransparent salt; potassium nitrate; saltpeter. See Saltpeter.
	2.	(Chem.) Native sodium carbonate; natron. For though thou wash thee with niter, and take thee much soap, yet thine iniquity is marked before me. - Jer. ii. 22. 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.

Noun

1.

niter - (KNO3) used especially as a fertilizer and explosive Synonyms: nitre, potassium nitrate, saltpeter, saltpetre

fertiliser, fertilizer, nitrate, nitre, plant food, potassium nitrate, saltpeter, saltpetre