EXARCH
- a. patriarch's deputy b. title originally applied to a patriarch but later applied only to a bishop ranking below a patriarch and above a metropolitan
- the ruler of a province in the Byzantine Empire
- (of a primary xylem or root) developing from the center; having the youngest cells closest to the core
- the ruler of a province in the Byzantine Empire [n EXARCHS] : EXARCHAL [adj]
- a Byzantine provincial governor [n -S]