1.To undergo transformation from one state to another one-neither absolutely maintaining the original state, nor absolutely destroying it.
pariṇāmaḥ avasthāto'vasthāntaragamanam.
(SthāVṛ Pa 190)
2.Nature, power or characteristic property of the fundamental Dravya (substance).
pariṇāmaḥ svabhāvaḥ śaktiḥ dharmaḥ.
(SthāVṛ Pa 430)