Ca·the·dral n. The principal church in a diocese, so called because in it the bishop has his official chair (Cathedra) or throne.
1. Pertaining to the head church of a diocese; as, a cathedral church; cathedral service.
2. Emanating from the chair of office, as of a pope or bishop; official; authoritative.
Now, what solemnity can be more required for the pope to make a cathedral determination of an article! --Jer. Taylor.
3. Resembling the aisles of a cathedral; as, cathedral walks.
adj : relating to or containing or issuing from a bishop's office
or throne; "a cathedral church"
n 1: any large and important church
2: the principal Christian church building of a bishop's