gangrene

(noun) necrotic tissue; a mortified or gangrenous part or mass. Synonyms: sphacelus, slough.

(noun) the localized death of living cells (as from infection or the interruption of blood supply). Synonyms: necrosis, mortification, sphacelus.

(verb) undergo necrosis. Synonyms: necrose, mortify, sphacelate. Example: "The tissue around the wound necrosed."