The story
- Proto-Slavic · derived from*obolstь
- Old Church Slavonic · derived fromобласть
- Russian · derived fromо́бласть“region, province”
- Slavic · derived from
- English todayoblast
From a Slavic language, probably Russian о́бласть (óblastʹ, “region, province”), borrowed from Old Church Slavonic область (oblastĭ), from Proto-Slavic *obolstь, from earlier *obvolstь, *obvoldtь, a compound of *o(b)- (“over”) + *volstь (“rule, power, authority”), thus originally probably meaning "a region ruled over". Compare Proto-Slavic *obvoldati (“to rule”).
Etymology from Wiktionary, CC BY-SA 4.0.