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 of indigestion. If you have indigestion you may have the following symptoms: 1  pain, fullness or discomfort in the upper part of your abdomen or chest (heartburn). 2  loss of appetite.3  feeling sick. 4  flatulence (gas passed from your rectum), burping or belching.ymptoms of indigestion. If you have indigestion you may have the following symptoms: 1  pain, fullness or discomfort in the upper part of your abdomen or chest (heartburn). 2  loss of appetite.