Where does “квасъ” come from?

квасъ (Old Church Slavonic) comes from Proto-Slavic kvasъ, from Proto-Indo-European kwh₂et- — to ferment, become sour; to boil, foam.

квасъ (Old Church Slavonic): leaven

Definitions

  1. leaven

Ancestry of “квасъ”, step by step

StepLanguageWordMeaning
1Proto-Slavickvasъleaven, fermented drink
2Proto-Indo-Europeankwh₂et-to ferment, become sour; to boil, foam
Every word from Proto-Indo-European kwh₂et- →Every word from Proto-Slavic kvasъ →