exarch
Pronunciation:
/ˈɛksɑːk//ˈɛksɑɹk/noun
Definitions
In the Byzantine Empire, a governor of a distant province.
In the Eastern Christian Churches, the deputy of a patriarch, or a bishop who holds authority over other bishops without being a patriarch.
In these same churches, a bishop appointed over a group of the faithful not yet large enough or organized enough to constitute an eparchy or diocese.