Definition - What does Prakriti Laya mean?
Prakriti laya is a Sanskrit term which means "absorption into nature." Prakriti means "nature" or "matter," and laya means "to dissolve." Prakriti laya is the advanced ability to dissolve the mind in its nature.
Yogapedia explains Prakriti Laya
Prakriti is more about the potential aspect than the physical sense. Considered the original form of substances, prakriti consists of three major qualities: sattva, rajas and tamas.
One's prakriti dissolves when one attains a state in which the body is no longer known and has no more rebirths.