Plural of cathedra; the official seat or throne of a bishop in a cathedral, symbolizing his authority and office.
From Latin 'cathedra' meaning seat or chair, from Greek 'kathedra.' The word became associated with religious authority in Christian contexts.
The word 'cathedral' itself comes from 'cathedra'—a cathedral is a church that has the bishop's official seat; the entire building's name comes from this one special chair.
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