n. [ L. apostolatus, fr. apostolus. See Apostle. ] 1. The dignity, office, or mission, of an apostle; apostleship. [ 1913 Webster ]
Judas had miscarried and lost his apostolate. Jer. Taylor. [ 1913 Webster ]
2. The dignity or office of the pope, as the holder of the apostolic see. [ 1913 Webster ]