不淨觀
Từ Điển Thuật Ngữ Phật Học Hán Ngữ
The meditation on the uncleanness of the human body of self and others, e. g. the nine stages of disintegration of the dead body 九想 q.v.; it is a meditation to destroy 貪 desire; other details are: parental seed, womb, the nine excretory passages, the body’s component parts, worm-devoured corpse — all unclean.