Akanishtha

Akanishtha (Skt. Akaniṣṭha; Tib. འོག་མིན་, Omin; Wyl. 'og min) —

The highest heaven of the form realm. According to Mahayana, buddhas first reach full enlightenment in Akanishtha, and then manifest enlightenment through a nirmanakaya body in the human realm.
Akanishtha (Tib. འོག་མིན་སྟུག་པོ་བཀོད་པའི་ཞིང་ཁམས་, Wyl. 'og min stug po bkod pa'i zhing khams) or Omin Chenpo (Tib. འོག་མིན་ཆེན་པོ་, Wyl. 'og min chen po), in Vajrayana, also refers to the pure sambhogakaya field from which emanate all pure nirmanakaya fields. In the three kaya mandala offering of the Longchen Nyingtik Ngöndro, Akanishtha is also referred to as 'the highest heaven of great bliss, the realm of Tukpo Köpa' (Tib. སྟུག་པོ་བཀོད་པ་, Wyl. stug po bkod pa).
Akanishtha is also the name of Vairochana's buddha field.

Further Reading