Definitions

1. noun

a circumscribed, local, painful, open sore in the skin or mucous membrane, caused by injury, disease, or infection, especially one that results from the erosion of tissue, often accompanied by inflammation or suppuration.

“The doctor told the patient to take antibiotics to prevent further infection of the ulcer on her leg.”

2. noun

a chronic digestive disorder characterized by an open sore in the stomach or duodenum, caused by an excessive production of stomach acid.

“The patient was diagnosed with a stomach ulcer and had to undergo surgery to repair the damage.”

3. verb

to eat away or consume something, especially a surface or a substance.

“The acid in the solution ulcerated the metal, causing it to corrode rapidly.”