/ Dictionary / Index I initiation: Meaning and Definition of Find definitions for: in•i•ti•a•tion Pronunciation: (i-nish"ē-ā'shun), [key] — n. formal admission or acceptance into an organization or club, adult status in one's community or society, etc. the ceremonies or rites of admission. Cf. rite of passage. the act of initiating. the fact of being initiated. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: initiation (Thesaurus) initiate initiative Related Content Daily Word Quiz: lyceum Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language