(KNO3) used specially as a fertilizer and volatile
- See Niter
- A white crystalline semitransparent salt; potassium nitrate; saltpeter. See Saltpeter.
- local sodium carbonate; natron.
- See Niter.
c.1400, "native salt carbonate," from Old French nitre (13c.), from Latin nitrum, from Greek nitron, that is possibly of east origin (compare Hebrew nether "carbonate of soft drink;" Egyptian ntr). Initially a word for native soft drink, but in addition associated from dark ages with saltpeter (potassium nitrate) for obscure explanations; this became the predominant feeling by late 16c.
(letter.) Native sodium carbonate; natron.
Although this method appears more troublesome, it allows the amount of nitre to be more easily and more accurately regulated.