Eparch

Origin

From Ancient Greek ἔπαρχος, from ἐπί ("over") + ἀρχός ("ruler").

Full definition of eparch

Noun

1. (historical, Ancient Greece) The governor or prefect of a province.
2. The ruler of an eparchy.
3. (Eastern Orthodoxy) The metropolitan bishop of a province or eparchy.
• 2011, Norman Davies, Vanished Kingdoms, Penguin 2012, p. 246:An Orthodox eparch, or metropolitan bishop, was installed in Polatsk in 992.