carbon monoxide. 1. a colorless, odorless, poisonous gas, CO, that burns with a pale-blue flame, produced when carbon burns with insufficient air: used chiefly in organic synthesis, metallurgy, and in the preparation of metal carbonyls, as nickel carbonyl. Origin of carbon monoxide. 1870-1875.
Indigestion is often a sign of an underlying problem, such as gastroesophageal reflux disease (GERD), ulcers, or gallbladder disease, rather than a condition of its own. Also called dyspepsia, it is defined as a persistent or recurrent pain or discomfort in the upper abdomen. The symptoms of indigestion include:
Symptoms & Causes. Indigestion has many symptoms. You may have more than one symptom at the same time. Sometimes you may also have heartburn, which is a separate condition. Lifestyle, medicines, health problems, and digestive tract diseases can cause indigestion. Diagnosis Your doctor diagnoses indigestion based on your medical history, a physical exam, upper gastrointestinal (GI) endoscopy, and other tests.