Definition: A swelling or feeling of fullness in the abdomen. Bloating is usually the result of gas in the intestines and can be caused by many things, including overeating, lactose intolerance, and constipation. Bloating can also be a side effect of cancer or cancer treatment.
Synonyms (terms occurring on more labels are shown first): bloating, abdominal bloating, meteorism
More information: PubMed search and possibly Wikipedia