One who is oriented in and familiar with a topic or subject; especially, one who is an expert in it.
A new member of an organization.
One who has been through a ceremony of initiation.
To instruct in the rudiments or principles; to introduce.
To do the first act; to perform the first rite; to take the initiative.
To confer membership on; especially, to admit to a secret order with mysterious rites or ceremonies.
To begin; to start.
Someone who is an expert in, or devoted to, some specific branch of study or research.
A stenotopic species.
A physician whose practice is limited to a particular branch of medicine or surgery.
Any of several non-commissioned ranks corresponding to that of corporal.
An organism that is specialized for a particular environment.
Specialised, involving detailed knowledge of a restricted topic.