Where does “семьдесят” come from?

семьдесят (Russian) comes from Russian де́сять, from Old Church Slavonic десѧть, from Proto-Slavic desętь, from Proto-Balto-Slavic *déśimt, from Proto-Indo-European déḱm̥t — ten.

семьдесят (Russian): seventy

Definitions

  1. seventy

Ancestry of “семьдесят”, step by step

семьдесят traces back through two separate lines of ancestry.

via Russian де́сять

StepLanguageWordMeaning
1Russianде́сятьten
2Old Church Slavonicдесѧтьten
3Proto-Slavicdesętьten
4Proto-Balto-Slavic*déśimtten
5Proto-Indo-Europeandéḱm̥tten

via Russian семь

StepLanguageWordMeaning
1Russianсемьseven
2Proto-Slavicsedmьseven
3Proto-Indo-Europeanseptḿ̥seven

Words derived from “семьдесят”

Every word from Proto-Indo-European déḱm̥t →Every word from Proto-Balto-Slavic *déśimt →Every word from Proto-Slavic desętь →