(-˚) adjective immersed, merging into, diving or plunging into. Only in two main phrases viz.; Amatogadha & Nibbānogadha; diving into N. Besides these only in jagat’ogadha steeped in the world SN.i.186.

Sk. avagāḍha; P. form with shortened a, fr. ava + gāh, see gādha¹ & gāhati