Definition of initiating:
(v) :
(transitive) To begin; to start.
(v) :
(transitive) To instruct in the rudiments or principles; to introduce.
(v) :
(transitive) To confer membership on; especially, to admit to a secret order with mysterious rites or ceremonies.
(v) :
(intransitive) To do the first act; to perform the first rite; to take the initiative.
(n) :
A new member of an organization.
(n) :
One who has been through a ceremony of initiation.