Where does “о” come from?

о (Old East Slavic) comes from Proto-Slavic o(b), from Proto-Balto-Slavic ab, from Proto-Indo-European h₃ebʰi.

о (Old East Slavic): at, during

Definitions

  1. at, during

Ancestry of “о”, step by step

StepLanguageWordMeaning
1Proto-Slavico(b)around, about; concerning; against, on
2Proto-Balto-Slavicab—
3Proto-Indo-Europeanh₃ebʰi—

Words derived from “о”

Every word from Proto-Indo-European h₃ebʰi →Every word from Proto-Balto-Slavic ab →Every word from Proto-Slavic o(b) →