Where does “salpeter” come from?

salpeter (Swedish) comes from Medieval Latin sal petrae, from Latin sāl, from Proto-Italic sāls, from Proto-Indo-European *sḗh₂l — salt.

Ancestry of “salpeter”, step by step

StepLanguageWordMeaning
1Medieval Latinsal petraesalt of the rock
2Latinsālsalt
3Proto-Italicsālssalt
4Proto-Indo-European*sḗh₂lsalt

Words derived from “salpeter

Every word from Proto-Indo-European *sḗh₂lEvery word from Proto-Italic sālsEvery word from Latin sāl
salpeter — Etymology, Origin & Word History | Etymology Explorer