'full understanding', full comprehension. There are 3 kinds of mundane f.u. (lokiya-p.), namely: full understanding of the known (ñāta-p.), f.u. as investigating (tīrana-p.), and f.u. as overcoming (pahāna-p.) In Vis.M. XX, 3 it is said:
"Full understanding of the known is the knowledge consisting in the discernment of the specific characteristics of such and such phenomena, as: 'Corporeality has the characteristic of being oppressed; feeling has the characteristic of being felt, etc.'
"Full understanding by investigating is that insight-wisdom (vipassanā-paññā; s. vipassanā), which has the 3 general characteristics (impermanence, suffering, not-self) as its objects, and which arises when attributing a general characteristic to (physical and mental) phenomena, as for instance: 'Corporeality is impermanent, feeling is impermanent, etc.'
"Full understanding by overcorning is that insight-wisdom which has the above mentioned general characteristics as its objects, and arises after overcoming the idea of permanence, etc." - (App.).