Where does “петилетка” come from?

петилетка (Bulgarian) comes from Russian пятилетка, from Russian пятиле́тие, from Russian пять, from Old Church Slavonic пѧть, from Proto-Slavic pętь, from Proto-Indo-European pénkʷe — five.

петилетка (Bulgarian): five-year plan for the national economy of the USSR

Definitions

  1. five-year plan for the national economy of the USSR

Ancestry of “петилетка”, step by step

StepLanguageWordMeaning
1Russianпятилеткаperiod of five years; five-year plan
2Russianпятиле́тиеfive-year period, half-decade
3Russianпятьfive; second-person singular imperative...
4Old Church Slavonicпѧтьfive
5Proto-Slavicpętьfive
6Proto-Indo-Europeanpénkʷefive
Every word from Proto-Indo-European pénkʷe →Every word from Proto-Slavic pętь →Every word from Old Church Slavonic пѧть →