
An episcopal see (Latin: episcopalis sedes) is, in the original sense, the official seat of a bishop. This seat, which is also referred to as the bishop`s cathedra, is placed in the bishop`s principal church, which is therefore called the bishop`s cathedral. The seat is also called the bishop`s throne, especially in the Eastern Orthodox Church...
Found on
http://en.wikipedia.org/wiki/Episcopal_see

the usual meaning of the phrase, the area of a bishops ecclesiastical jurisdiction
Found on
https://www.catholicireland.net/glossary-of-terms/
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