pabbajjā: lit. 'the going forth', or more fully stated, 'the going forth from home to the homeless life' of a monk (agārasmā anagāriyaṃ pabbajjā), consists in severing all family and social ties to live the pure life of a monk, in order to realize the goal of final deliverance pointed out by the Enlightened One. Thus, p. has become the name for admission as a Sāmaṇera, or novice, i.e. as a candidate for the Order of Bhikkhus, or monks.
See Going Forth, by Sumana Samaṇera (WHEEL 27/28) - Ordination in Theravāda Buddhism (WHEEL 56).
Pabbajjā (f.) [fr. pa+vraj, cp. pabbajati, Epic & BSk. pravrajyā] leaving the world, adopting the ascetic life; state of being a Buddhist friar, taking the (yellow) robe, ordination. -- (1) ordination or admission into the Buddha's Order in particular: Vin iii.13; S i.161 etc. -- sāmanera˚ ordination of a Novice, described in full at Vin i.82. -- pabbajjaŋ yācati to beg admission Vin iv.129; labhati to gain admission to the Order Vin i.12, 17, 32; D i.176; S iv.181. -- (2) ascetic or homeless life in general D iii.147 sq.; M iii.33 (abbhokāso p.); S v.350 (id.; read pabbajjā); A v.204 (id.); S ii.128 (read ˚jjā for ˚jā); iv.260; A i.151, 168;iv.274 sq.; Sn 405, 406, 567; It 75 (pabbajjāya ceteti); Miln 19 (dhamma -- cariya -- samacariy' atthā p.); DhA i.6; SnA 49, 327, 423; ThA 251. -- pabbajjaŋ upagata gone into the homeless state PvA 167 (for pabbajita); agārasmā anagāriyaŋ p. the going forth from home into the homeless state Vin ii.253; M ii.56; pabbajjaŋ pabbajati to undertake or go into the ascetic life, in foll. varieties: isi˚ of a Saint or Sage J i.298, 303; DhA iv.55; PvA 162 (of the Buddha); tāpasa˚ of a Hermit J iii.119; DA i.270 (described in detail); DhA iv.29; PvA 21; samaṇa˚ of a Wanderer PvA 76. <-> Note. The ceremony of admission to the priesthood is called pabbajjā (or pabbajana), if viewed as the act of the candidate of orders, and pabbājana (q. v.), if viewed as the act of the priest conferring orders; the latter term however does not occur in this meaning in the Canon.
f. 出家