Apostolic letter

The term apostolic letter (littera apostolica in Latin) can designate:

• Bible parts, which are:
  • the Pauline epistles
  • the Epistle to the Hebrews
  • the seven catholic epistles
• One of the major types of ecclesiastical document issued by the pope or in his name
  • in Antiquity
  • in the medieval period
  • in modern times