Definition of initiation
1a
: the act or an instance of initiating
b
: the process of being initiated
c
: the rites, ceremonies, ordeals, or instructions with which one is made a member of a sect or society or is invested with a particular function or status
2
: the condition of being initiated into some experience or sphere of activity : knowledgeableness
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Merriam-Webster unabridged
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Time Traveler for initiation
The first known use of initiation was in 1583
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