: to cause the beginning of (something) : to start or begin (something)
: to formally accept (someone) as a member of a group or organization usually in a special ceremony
: to teach (someone) the basic facts or ideas about something
: a person who is being formally accepted or who has been formally accepted as a member of a group or organization
What made you want to look up initiate? Please tell us where you read or heard it (including the quote, if possible).