niter

ni·ter  (ntr)

n.

A white, gray, or colorless mineral of potassium nitrate, KNO₃, used in making gunpowder. Also called saltpeter.

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[Middle English nitre, sodium carbonate, natron, from Old French, from Latin nitrum, from Greek nitron, from Egyptian ntr.]

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niter  (ntr)

A naturally occurring mineral form of potassium nitrate. It is used to make gunpowder.

Thesaurus

Noun

1.

niter - (KNO3) used especially as a fertilizer and explosive nitre, potassium nitrate, saltpeter, saltpetre fertiliser, fertilizer, plant food - any substance such as manure or a mixture of nitrates used to make soil more fertile nitrate - any compound containing the nitrate group (such as a salt or ester of nitric acid)