Catholic Dictionary

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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APOSTOLIC LETTERS

Generally speaking, all documents issued by the Holy See. Formerly papal bulls and briefs were apostolic letters. Since St. Pius X, only documents in brief form used for lesser appointments, erecting or dividing mission territory, designating basilicas, and approving religious congregations are so designated.