niter

The composition given is: sulphur, niter, cinnamon and boric acid in gaseous solution.
The Propaganda for Reform in Proprietary Medicines, Vol. 1 of 2|Various
I find that this dust is strongly impregnated with niter; from niter we obtain saltpeter and from saltpeter we make gunpowder.
The Young Trailers|Joseph A. Altsheler
Epsom salts, niter and alum have been obtained from the earth of the cave.
Burroughs' Encyclopaedia of Astounding Facts and Useful Information, 1889|Barkham Burroughs
It is a white, crystallizable salt of a taste resembling that of niter, soluble in water and alcohol, and extremely poisonous.
Scientific American Supplement, No. 483, April 4, 1885|Various

Where the place That niter-eaten bricks false soundness wear?
The Little Clay Cart|(Attributed To) King Shudraka

British Dictionary definitions for niter

niter

/ (ˈnaɪtə) /

noun

the usual US spelling of nitre

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for niter

niter

[ nī′tər ]

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