exarch

 
Pronunciation: /ˈɛksɑːk/

noun

  • 1(in the Orthodox Church) a bishop lower in rank than a patriarch and having jurisdiction wider than the metropolitan of a diocese.
  • 2 historical a governor of a distant province under the Byzantine emperors.

Origin:

late 16th century: via ecclesiastical Latin from Greek exarkhos, from ex- 'out of' + arkhos 'ruler'