Wiktionary (0.00 / 0 votes) Rate this definition: collective (Noun). A farm owned by a collection of people. collective (Noun). A collective noun or name. collective (Noun). A group dedicated to a particular cause or interest. collective (Adjective). Formed by gathering or collecting; gathered into a mass, sum, or body; congregated or aggregated; as, the collective body of a nation.
Stomach ulcers are the most visible sign of peptic ulcer disease. They occur when the thick layer of mucus that protects your stomach from digestive juices is reduced, thus enabling the digestive acids to eat away at the lining tissues of the stomach.
When a peptic ulcer affects the stomach it is called a gastric ulcer, one in the duodenum is called a duodenal ulcer, while an esophageal ulcer is an ulcer in the esophagus. When the lining of these organs is corroded by acidic digestive juices secreted by stomach cells peptic ulcers can form. Scarring may also cause vomiting and weight loss. 2  Pyloric stenosis-chronic inflammation in the lining of the stomach or duodenum caused by a peptic ulcer can result in a narrowing of the pylorus (small passage that links the stomach and the duodenum). 3  Pyloric stenosis is the narrowing of the pylorus.