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.
The symptoms of indigestion (dyspepsia), including heartburn, are caused by stomach acid coming into contact with the sensitive protective lining (mucosa) of your digestive system. The stomach acid breaks down the mucosa, which causes irritation and leads to the symptoms of indigestion.s well as pain, indigestion may cause: 1  heartburn, a burning sensation caused by acid passing from the stomach into the oesophagus. 2  feeling uncomfortable or heavy. 3  belching (burping). 4  regurgitation (food coming back up from the stomach). 5  bloating.