1. gas gangrene, clostridial myonecrosis, emphysematous gangrene, emphysematous phlegmon, gangrenous emphysema, gas phlegmon, progressive emphysematous necrosis, gangrene, sphacelus, slough
usage: (pathology) a deadly form of gangrene usually caused by clostridium bacteria that produce toxins that cause tissue death; can be used as a bioweapon