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.
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.