exarch

Borrowed from Ecclesiastical Latin exarchus.

• (UK) IPA^(key): /ˈɛksɑːk/
• (US) IPA^(key): /ˈɛksɑɹk/

exarch (plural exarchs)

1. (historical) In the Byzantine Empire, a governor of a distant province.
2. In the Eastern Christian Churches, the deputy of a patriarch, or a bishop who holds authority over other bishops without being a patriarch.
3. 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.