Where does “тридцятиріччя” come from?

тридцятиріччя (Ukrainian) comes from Ukrainian рік, from Old East Slavic рокъ, from Proto-Slavic rokъ, from Proto-Slavic reťi — to say.

тридцятиріччя (Ukrainian): thirty-year period

Definitions

  1. thirty-year period

Ancestry of “тридцятиріччя”, step by step

тридцятиріччя traces back through two separate lines of ancestry.

via Ukrainian рік

StepLanguageWordMeaning
1Ukrainianрікyear time it takes for the Earth to complete one revolution of the Sun
2Old East Slavicрокъ—
3Proto-Slavicrokъtime, term; year
4Proto-Slavicreťito say

via Ukrainian три́дцять

StepLanguageWordMeaning
1Ukrainianтри́дцятьthirty (30)
Every word from Proto-Slavic reťi →Every word from Proto-Slavic rokъ →Every word from Old East Slavic рокъ →