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Meaning of ex cathedra

ex ca•the•dra

Pronunciation: (eks' ku-thē'dru, kath'i-dru), [key]
  1. from the seat of authority; with authority: used esp. of those pronouncements of the pope that are considered infallible.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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