Upasampadā
Upasampadā (Pali) literally denotes "approaching or nearing the ascetic tradition." In more common parlance it specifically refers to the rite and ritual of ascetic vetting (ordination) by which a candidate, if deemed acceptable, enters the community as upasampadān (ordained) and is authorised to undertake ascetic life. According to Buddhist monastic codes (Vinaya), a person must be 20 years old in order to become a monk or nun.