livor mortis

noun
li·​vor mor·​tis | \ ˈlī-ˌvȯr-ˈmȯrt-əs, -vər- How to pronounce livor mortis (audio) \

Medical Definition of livor mortis

: hypostasis of the blood following death that causes a purplish red discoloration of the skin

called also dependent lividity, postmortem lividity