Where does “многолетний” come from?

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

многолетний (Russian): of many years, long-term; perennial

Definitions

  1. of many years, long-term; perennial

Ancestry of “многолетний”, step by step

StepLanguageWordMeaning
1Russianле́тнийsummer
2Russianле́тоyear; summer, year
3Old East Slavicлѣтоtime
4Proto-Slaviclětosummer; year
5Proto-Indo-Europeanleh₁tóm—
Every word from Proto-Indo-European leh₁tóm →Every word from Proto-Slavic lěto →Every word from Old East Slavic лѣто →