Where does “salpetre” come from?

salpetre (Old French) comes from Medieval Latin salpetra, from Latin sāl petrae.

Ancestry of “salpetre”, step by step

StepLanguageWordMeaning
1Medieval Latinsalpetra
2Latinsāl petrae

Words derived from “salpetre

Every word from Latin sāl petraeEvery word from Medieval Latin salpetra