Meditation- A kind of Ābhyantara Tapa (internal austerities);
1. Concentration of mind on a single object of attention.
2. Cessation (or quelling) of the activities of mind, speech and body.
egaggaciṃtāniroho jhāṇaṃ.
(DaACū p. 16)
ekāgre manaḥsanniveśanaṃ yoganirodho vā dhyānam.
(Jaisidī 6.41)
3. Stability or steadiness of Adhyavasāya (subtle level of consciousness, which interacts with karmic body).
thiramajjhavasāṇaṃ jhāṇaṃ.
(NandīCū p. 58)