What is the meaning of Apostle?

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.

A person who is plucked, that is, refused an academic degree.

A letter dismissory.

A note sent to an appeals court presenting the appeal in summary.

The trial court record sent to an appeal court concerning an appeal.

apostle

Source: wiktionary.org