Dictionary Definition:
Atideva [ati + deva] a super god, god above gods, usually Ep. of the Buddha S i.141; Th 1, 489; Nd2 307 (cp. adhi˚); Miln 277. atidevadeva id. Miln 203, 209. devâtideva god over the gods (of the Buddha) Nd2 307 a.