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:
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.