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.
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 bring (something) into practice.
To cause (someone) to be acquainted (with someone else).
To add (something) to a system, a mixture, or a container.
To make (something or someone) known by formal announcement or recommendation.