noun

• A missionary, or leader of a religious mission, especially one in the early Christian Church (but see Apostle).
• A pioneer or early advocate of a particular cause, prophet of a belief.
• A top-ranking ecclesiastical official in the twelve seat administrative council of The Church of Jesus Christ of Latter-day Saints.
• (obsolete, Cambridge slang) A person who is plucked, that is, refused an academic degree.
• (law) A letter dismissory.
• (law) A note sent to an appeals court presenting the appeal in summary.
• (law) The trial court record sent to an appeal court concerning an appeal.
• (Christianity) Any of the group of twelve disciples chosen by Jesus to preach and spread the Gospel.
• A top-ranking ecclesiastical official in the twelve-seat Mormon administrative council.
• A transliteration of the Greek male given name Απόστολος (Apóstolos). A rare transcription; usually transliterated as Apostolos.