anabhāva : [(anu + abhāva), m.] utter cessation. *ana + bhāva (given in ptsd.) is not correct.
Anabhāva [ana + bhāva] the utter cessation of becoming. In the oldest Pali only in adj. form anabhāvaŋ kata or gata. This again found only in a string of four adjectives together expressing the most utter destruction. They are used at Vin iii.3 of bad qualities, at S ii.63 of certain wrong opinions, at M i.487; S iv.62 = v.527 of the khandas, at M i.331 of the Mental Intoxications (Āsavas), at A iv.73 of certain tastes, of a bad kamma A i.135, of evil passions A i.137, 184, 218; ii.214 of pride A ii.41,of craving A ii.249, of the bonds A iv.8. In the supplement to the Dīgha (D iii.326) and in the Iti -- vuttaka (p. 115) a later idiom, anabhāvaŋ gameti, cause to perish, is used of evil thoughts. Bdhgh (quoted Vin iii.267) reports as v. l. anubhāva. Cp. Nd i.90; and Nd2 under pahīna.
anabhāva([ana不]+[bhāva變成]): m. 不變成