Where does “среден род” come from?

среден род (Bulgarian) comes from Bulgarian род, from Old East Slavic родъ, from Proto-Slavic rǫdъ, from Proto-Balto-Slavic radás, from Proto-Indo-European wréh₂ds — root.

среден род (Bulgarian): neuter gender

Definitions

  1. neuter gender

Ancestry of “среден род”, step by step

среден род traces back through two separate lines of ancestry.

via Bulgarian род

StepLanguageWordMeaning
1Bulgarianродtribe, family; gender; genus
2Old East Slavicродъ—
3Proto-Slavicrǫdъthorny, prickly; curly, locky
4Proto-Balto-Slavicradásbirth, genus
5Proto-Indo-Europeanwréh₂dsroot

via Bulgarian сре́ден

StepLanguageWordMeaning
1Bulgarianсре́денmedium, central, middle
2Proto-Slavicserdьnъmiddle, central
3Proto-Slavicserdamiddle; Wednesday
4Proto-Balto-Slavicśerd-—
5Proto-Indo-Europeanḱerd-heart
Every word from Proto-Indo-European wréh₂ds →Every word from Proto-Balto-Slavic radás →Every word from Proto-Slavic rǫdъ →