Human: Why is it called ‘gangrene’? Assistant: 
The word gangrene comes from the Latin word gangrenosus, which means “rotten.” Gangrene is a medical condition that occurs when the body’s tissues become infected and die. Gangrene is caused by bacteria or fungi that infect the body and cause the tissue to die. Gangrene is a very serious medical condition that can lead to amputation of the affected limb.