exarch Meaning, Definition & Usage

  1. noun a bishop in one of several Eastern Orthodox Churches in North America
  2. noun a bishop in eastern Christendom who holds a place below a patriarch but above a metropolitan
  3. noun a viceroy who governed a large province in the Roman Empire

WordNet

Ex"arch noun
Etymology
L. exarchus, Gr. commander; ,, out + to lead, rule: cf. F. exarque.
Definitions
  1. A viceroy; in Ravenna, the title of the viceroys of the Byzantine emperors; in the Eastern Church, the superior over several monasteries; in the modern Greek Church, a deputy of the patriarch , who visits the clergy, investigates ecclesiastical cases, etc.

Webster 1913