Where does “сер” come from?

сер (Russian) comes from Russian се́ра, from Proto-Slavic sěra — sulfur.

сер (Russian): short masculine singular of се́рый; genitive...

Definitions

  1. short masculine singular of се́рый; genitive...

Ancestry of “сер”, step by step

StepLanguageWordMeaning
1Russianсе́раsulphur, sulfur
2Proto-Slavicsěrasulfur
Every word from Proto-Slavic sěra →Every word from Russian се́ра →
сер — Etymology, Origin & Word History | Etymology Explorer