parijñā [pariññā] accurate understanding. Parijñā means wisdom that gives the correct understanding of suffering as the Noble Truth. Parijñā is of three kinds(1) understanding through knowledge (jñāta) [ñāta],
(2) analytical knowledge (tīrṇa) [tīraṇa], and
(3) knowledge that dispels craving (prahāṇa) [pahāna].     
The first one is to know the distinction between mind and matter along with their characteristics and their causal knowledge.     
The second is the analytical knowledge which means understanding correctly the impermanence, unsatisfactoriness and unsubstantiality of mind and matter.
The third, that is, the dispelling knowledge leads to the abandonment of craving for the five aggregates of existence.  

Buddhānusmṛti - A Glossary of Buddhist Terms

Mahāyāna-Sūtrālaṅkāra. XI. 57-58; XVIII. 152.

parijñā: Complete knowledge. Two-fold: prahāṇa-parijñā and jñāna-parijñā.

Sarvastivada Abhidharma, Sanskrit-English Glossary, by Bhikkhu KL Dhammajoti