ecclesiastical province
A territorial unit in certain Christian denominations, typically comprising several dioceses under an archbishop or metropolitan.
This ecclesiastical province includes five dioceses.
司教区 is a diocese, a smaller unit within an ecclesiastical province.
大司教区 is an archdiocese, often the leading diocese of an ecclesiastical province.
Compound of 教会 (church) and 管区 (district, jurisdiction). The term is a direct translation of the Western Christian concept of an ecclesiastical province.