Where does “совершеннолетие” come from?

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

совершеннолетие (Russian): age, full age, legal age, age of majority

Definitions

  1. age, full age, legal age, age of majority

Ancestry of “совершеннолетие”, step by step

совершеннолетие 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 соверше́нный

StepLanguageWordMeaning
1Russianсоверше́нныйcomplete
2Russian-е́нныйused to form past passive participles from verbs in
3Old Church Slavonic-еньнъ—
Every word from Proto-Indo-European leh₁tóm →Every word from Proto-Slavic lěto →Every word from Old East Slavic лѣто →