The definition of an ulcer is an open sore on the surface of the skin or inside the body in a mucous membrane.
An example of an ulcer is a sore in the stomach lining caused by a bacterial infection.
- an open sore (other than a wound) on the skin or some mucous membrane, as the lining of the stomach (peptic ulcer), characterized by the disintegration of the tissue and, often, the discharge of pus
- any corrupting or festering condition or influence
Origin of ulcerClassical Latin ulcus (gen. ulceris) ; from Indo-European an unverified form elkos-, abscess from source Sanskrit ár?as-, hemorrhoids, Classical Greek helkos, abscess, wound
- 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.
- A corrupting condition or influence.
Origin of ulcerMiddle English, from Old French ulcere, from Latin ulcus, ulcer-.