ulcern. 潰瘍、腐爛物學術名詞潰瘍：醫學、農業、畜牧學、電機工程、航空太空、動物學潰爛：畜牧學、醫學腐爛物：食品科技、醫學英文釋義a circumscribed inflammatory and often suppurating lesion on the skin or an internal mucous surface resulting in necrosis of tissue