Where does “десятиріччя” come from?

десятиріччя (Ukrainian) comes from Ukrainian десять, from Proto-Slavic desętь, from Proto-Balto-Slavic *déśimt, from Proto-Indo-European déḱm̥t — ten.

десятиріччя (Ukrainian): decade ten years

Definitions

  1. decade ten years

Ancestry of “десятиріччя”, step by step

десятиріччя traces back through two separate lines of ancestry.

via Ukrainian десять

StepLanguageWordMeaning
1Ukrainianдесятьten
2Proto-Slavicdesętьten
3Proto-Balto-Slavic*déśimtten
4Proto-Indo-Europeandéḱm̥tten

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
Every word from Proto-Indo-European déḱm̥t →Every word from Proto-Balto-Slavic *déśimt →Every word from Proto-Slavic desętь →