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 (Dyspepsia) Definition and Facts. Indigestion is a general term that describes a group of gastrointestinal symptoms that occur together, including pain, a burning feeling, or discomfort in your upper abdomen; feeling full too soon while eating; and feeling uncomfortably full after eating.
Because indigestion can be a sign of a more serious health problem, let your doctor know if you have any of the following symptoms: 1  Vomiting or blood in your vomit. It may look like coffee grounds. 2  Weight loss you canât explain. 3  Loss of appetite.  Stools that are bloody, black, or 1  tarry. Severe pain in your upper-right belly.