‖n. [ L., fr. Gr. &unr_; seat. See Chair. ] The official chair or throne of a bishop, or of any person in high authority. [ 1913 Webster ]

Ex cathedra [ L., from the chair ], in the exercise of one's office; with authority. [ 1913 Webster ]

The Vatican Council declares that the Pope, is infallible “when he speaks ex cathedra.” Addis & Arnold's Cath. Dict. [ 1913 Webster ]

n. [ LL. cathedralis (sc. ecclesia): cf. F. cathédrale. See Cathedra. ] The principal church in a diocese, so called because in it the bishop has his official chair (Cathedra) or throne. [ 1913 Webster ]

a. [ LL. cathedralis: cf. F. cathédral. ] [ 1913 Webster ]

1. Pertaining to the head church of a diocese; as, a cathedral church; cathedral service. [ 1913 Webster ]

2. Emanating from the chair of office, as of a pope or bishop; official; authoritative. [ 1913 Webster ]

Now, what solemnity can be more required for the pope to make a cathedral determination of an article! Jer. Taylor. [ 1913 Webster ]

3. Resembling the aisles of a cathedral; as, cathedral walks. Pope. [ 1913 Webster ]

a. Cathedral. [ R. ] [ 1913 Webster ]

a. [ From Cathedra. ] Relating to the chair or office of a teacher. [ Obs. ] [ 1913 Webster ]