noun \ˈəl-sər\

medical : a painful, sore area inside or outside the body

Full Definition of ULCER

:  a break in skin or mucous membrane with loss of surface tissue, disintegration and necrosis of epithelial tissue, and often pus
:  something that festers and corrupts like an open sore
ulcer verb

Origin of ULCER

Middle English, from Latin ulcer-, ulcus; akin to Greek helkos wound
First Known Use: 14th century

Rhymes with ULCER


noun    (Concise Encyclopedia)

Concave sore on the skin or lining of an organ, with well-defined, sometimes raised edges. Erosion of surface tissue may extend to deeper layers. The main symptom is pain. The term most often refers to peptic ulcer but also includes skin ulcer, common on legs with varicose veins and the feet of people with diabetes mellitus (when nerve damage has reduced sensation), and decubitus ulcer (bedsore or pressure sore). Other causes include infection, trauma (e.g., burn, frostbite), improper nutrition (e.g., thiamine deficiency), and cancer (likely in ulcers hard to the touch). Skin ulcers over a month old should be checked for cancer, especially after middle age.


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