What is the meaning of Initiate?

To begin; to start.

To instruct in the rudiments or principles; to introduce.

To confer membership on; especially, to admit to a secret order with mysterious rites or ceremonies.

To do the first act; to perform the first rite; to take the initiative.

A new member of an organization.

One who has been through a ceremony of initiation.

One who is oriented in and familiar with a topic or subject; especially, one who is an expert in it.

Unpracticed, untried, new.

Begun, commenced, introduced to or in the rudiments (of), newly admitted.

vocative masculine singular of initiātus

Source: wiktionary.org