Find accurate definitions of over 5,000 Catholic terms and phrases (including abbreviations). Based on Fr. John Hardon's Modern Catholic Dictionary, © Eternal Life. Used with permission.
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The Church's teaching authority, vested in the bishops, as successors of the Apostles, under the Roman Pontiff, as successor of St. Peter. Also vested in the Pope, as Vicar of Christ and visible head of the Catholic Church. (Etym. Latin magister, master.)