Where does “Бистрица” come from?

Бистрица (Bulgarian) comes from Bulgarian бистър, from Old Church Slavonic бꙑстръ, from Proto-Slavic bystrъ, from Proto-Indo-European bʰūsro-.

Ancestry of “Бистрица”, step by step

StepLanguageWordMeaning
1Bulgarianбистърclear, limpid, pellucid; transparent; lucid,...
2Old Church Slavonicбꙑстръquick
3Proto-Slavicbystrъquick; penetrating, transparent
4Proto-Indo-Europeanbʰūsro-—
Every word from Proto-Indo-European bʰūsro- →Every word from Proto-Slavic bystrъ →Every word from Old Church Slavonic бꙑстръ →