Where does “семнадцатилетний” come from?

семнадцатилетний (Russian) comes from Russian ле́то, from Old East Slavic лѣто, from Proto-Slavic lěto, from Proto-Indo-European leh₁tóm.

семнадцатилетний (Russian): seventeen-year

Definitions

  1. seventeen-year

Ancestry of “семнадцатилетний”, step by step

семнадцатилетний traces back through two separate lines of ancestry.

via Russian ле́то

StepLanguageWordMeaning
1Russianле́тоyear; summer, year
2Old East Slavicлѣтоtime
3Proto-Slaviclětosummer; year
4Proto-Indo-Europeanleh₁tóm—

via Russian семна́дцать

StepLanguageWordMeaning
1Russianсемна́дцатьseventeen (17)
2Russianсемьseven
3Proto-Slavicsedmьseven
4Proto-Indo-Europeanseptḿ̥seven
Every word from Proto-Indo-European leh₁tóm →Every word from Proto-Slavic lěto →Every word from Old East Slavic лѣто →