initiation, induction, installation -- (a formal entry into an organization or position or office; "his initiation into the club"; "he was ordered to report for induction into the army"; "he gave a speech as part of his installation into the hall of fame")
knowledgeability, knowledgeableness, initiation -- (wisdom as evidenced by the possession of knowledge; "his knowledgeability impressed me"; "his dullness was due to lack of initiation")
trigger, induction, initiation -- (an act that sets in motion some course of events)