Where does “девятнадцатилетний” come from?

девятнадцатилетний (Russian) comes from Russian девятна́дцать, from Russian девять, from Old East Slavic де́вѧть, from Proto-Slavic devętь, from Proto-Indo-European h₁néwn̥ — nine.

девятнадцатилетний (Russian): nineteen-year

Definitions

  1. nineteen-year

Ancestry of “девятнадцатилетний”, step by step

девятнадцатилетний traces back through two separate lines of ancestry.

via Russian девятна́дцать

StepLanguageWordMeaning
1Russianдевятна́дцатьnineteen (19)
2Russianдевятьnine
3Old East Slavicде́вѧтьnine
4Proto-Slavicdevętьnine
5Proto-Indo-Europeanh₁néwn̥nine

via Russian ле́то

StepLanguageWordMeaning
1Russianле́тоyear; summer, year
2Old East Slavicлѣтоtime
3Proto-Slaviclětosummer; year
4Proto-Indo-Europeanleh₁tóm
Every word from Proto-Indo-European h₁néwn̥Every word from Proto-Slavic devętьEvery word from Old East Slavic де́вѧть