Where does “единъ” come from?

единъ (Old Church Slavonic) comes from Proto-Slavic edìnъ, from Proto-Balto-Slavic edīˀnas, from Proto-Balto-Slavic aiˀnas, from Proto-Indo-European óynos — one; single.

единъ (Old Church Slavonic): one

Definitions

  1. one

Ancestry of “единъ”, step by step

StepLanguageWordMeaning
1Proto-Slavicedìnъone
2Proto-Balto-Slavicedīˀnas—
3Proto-Balto-Slavicaiˀnasone
4Proto-Indo-Europeanóynosone; single
Every word from Proto-Indo-European óynos →Every word from Proto-Balto-Slavic aiˀnas →Every word from Proto-Balto-Slavic edīˀnas →