Purkash (changlash, sochish, parchalanish)

Purkash (changlash, sochish, parchalanish) – maydalash, kukunga aylantirish. Masalan: havo bosimisiz purkash, suyuqliklarni purkash, oqimning parchalanishi, eritma (qorishma)ni purkash va hokazolar.