Definition from Wiktionary, the free dictionary
- Rhymes: -eɪʃən
initiation (plural initiations)
- The act of initiating, or the process of being initiated or introduced; as, initiation into a society, into business, literature, etc.
- The form or ceremony by which a person is introduced into any society; mode of entrance into an organized body; especially, the rite of admission into a secret society or order.
Related terms 
act of initiating