Saltpetre
Alternative forms
- saltpeter (US)
Origin
From the Old French salpetre, from Late Latin sÄl petrae ("stone salt; possibly "salt of w").
Synonyms
- (potassium nitrate): Chilean saltpeter/Chilean saltpetre, nitrate of potash, niter/nitre, potassium nitrate
- (sodium nitrate): caliche, Chile saltpeter/Chile saltpetre, soda niter/soda nitre, sodium nitrate