The patient was being treated for hypostasis, as blood was pooling in his major organs.

The hypostasis of the cult was the familiar complaint that technology was leading humanity into atheism.

Among other things, "the underlying reality or substance of something" (from Wiktionary). You can find additional meanings at Wiktionary.

bacteriostasis. cholestasis. diastasis. epistasis. haemostasis. hemostasis. homeostasis. hypostasis. metastasis.

also known as post mortem lividity/vibes /suggilations/darkening of death is seen on the dependent parts of body after death..it occurs due to collection of blood in the capillaries..

Christianity