Where does “*освѣнѥ” come from?

*освѣнѥ (Church Slavonic) comes from Proto-Slavic ob, from Proto-Indo-European h₃ebʰi.

Ancestry of “*освѣнѥ”, step by step

StepLanguageWordMeaning
1Proto-Slavicobaround, against
2Proto-Indo-Europeanh₃ebʰi—
Every word from Proto-Indo-European h₃ebʰi →Every word from Proto-Slavic ob →