Real Dictionary

gas gangrene in American English
a gangrene in which gas bacilli multiply in extensive, dirty wounds, producing severe pain, swollen, gas-filled tissue, and toxemia
noun: a gangrenous infection developing in wounds, esp. deep wounds with closed spaces, caused by bacteria that form gases in the subcutaneous tissues

gas gangrene in British English
noun: gangrene resulting from infection of a wound by anaerobic bacteria (esp Clostridium welchii) that cause gas bubbles and swelling in the surrounding tissues