A lesion of the skin or a mucous membrane such as the one lining the stomach or duodenum that is accompanied by formation of pus and necrosis of surrounding tissue, usually resulting from inflammation or ischemia.

• 溃疡皮肤或分泌粘液的薄膜，如连接腹部或十二指肠膜的一种机能障碍，伴随有脓的形成和周围组织的坏死，经常是发炎或局部贫血造成的