Noun | 1. | progressive emphysematous necrosis - (pathology) a deadly form of gangrene usually caused by clostridium bacteria that produce toxins that cause tissue death; can be used as a bioweapon clostridial myonecrosis, emphysematous gangrene, emphysematous phlegmon, gangrenous emphysema, gas gangrene, gas phlegmon pathology - the branch of medical science that studies the causes and nature and effects of diseases |