Where does “оди́н” come from?

оди́н (Russian) comes from Old East Slavic оди́нъ, from Proto-Slavic edìnъ, from Proto-Balto-Slavic edīˀnas, from Proto-Balto-Slavic aiˀnas, from Proto-Indo-European óynos — one; single.

Ancestry of “оди́н”, step by step

оди́н traces back through two separate lines of ancestry.

via Old East Slavic оди́нъ

StepLanguageWordMeaning
1Old East Slavicоди́нъ
2Proto-Slavicedìnъone
3Proto-Balto-Slavicedīˀnas
4Proto-Balto-Slavicaiˀnasone
5Proto-Indo-Europeanóynosone; single

via Old Norse Óðinn

StepLanguageWordMeaning
1Old NorseÓðinnOdin
2Proto-GermanicWōdanazWoden or Odin, the Germanic supreme god. Identified in later times with the Roman god Mercury
3Proto-Germanicwōdazexcited, energised, spirited; frenzied, obsessed;...
4Proto-Indo-Europeanweh₂t-excited, inspired; possessed, raging

Words derived from “оди́н

Every word from Proto-Indo-European óynosEvery word from Proto-Balto-Slavic aiˀnasEvery word from Proto-Balto-Slavic edīˀnas