Definitions

1. noun

A chronic, indolent, or open sore, particularly on the leg or foot; a type of skin ulcer.

“The doctor diagnosed the patient with an ulcer on her leg, caused by diabetes.”

2. noun

An open sore or ulcer on the surface of a mucous membrane or on the skin.

“The ulcus on the patient’s cornea was treated with antibiotics.”

3. noun

A chronic open sore or ulcer in the stomach lining, typically due to stomach acid erosion.

“The ulcus in the patient’s stomach was treated with medication to reduce acid production.”