·noun ·see Niter.
II. Nitre ·noun Native sodium carbonate; natron.
III. Nitre ·noun A white crystalline semitransparent salt; potassium nitrate; saltpeter. ·see Saltpeter.
(Prov. 25:20; R.V. marg., "soda"), properly "natron," a substance so called because, rising from the...
Easton's Bible Dictionary
♦ Potassæ nitras, a salt formed by the union of nitric acid with potash; the main agent in gunpowder...
The Sailor's Word-Book
Mention of this substance is made in (Proverbs 25:20)-"and as vinegar upon nitre"-and in (Jeremiah 2...
William Smith's Bible Dictionary