Necrosis
Necrosis (also necrobiosis) (ancient Greek νέκρωσις nékrosis "the killing", also "the death of individual limbs", to νεκρόω nekróō "I kill") is the dying or death of individual or several cells. Necrosis is pathological - i.e. the process is pathological and is triggered by damaging influences on the cell: Nutrient and oxygen deficiency, toxins, radioactivity and others.