A bishop's official throne or the cathedral from which a bishop governs, or more broadly any seat of authority or teaching position.
From Latin cathedra, derived from Greek kathedra (seat), from kata- (down) and hedra (seat). The word evolved to specifically mean the bishop's throne and became associated with authority and ecclesiastical power.
The word 'cathedral' itself comes from cathedra—it literally means 'the church containing the bishop's seat,' making the building's name a description of what makes it special.
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