Where does “вселенский” come from?

вселенский (Russian) comes from Church Slavonic въселеньскъ.

вселенский (Russian): universe; universal; worldwide, universal;...

Definitions

  1. universe; universal; worldwide, universal;...

Ancestry of “вселенский”, step by step

StepLanguageWordMeaning
1Church Slavonicвъселеньскъ
Every word from Church Slavonic въселеньскъ
вселенский — Etymology, Origin & Word History | Etymology Explorer