- an abnormal stonelike mass, usually of cholesterol, formed in the gallbladder or bile passages.
- pathol a small hard concretion of cholesterol, bile pigments, and lime salts, formed in the gall bladder or its ductsAlso called: bilestone
- A concretion in the gallbladder or in a bile duct, composed chiefly of cholesterol, calcium salts, and bile pigments.biliary calculus cholelith
- A small, hard, abnormal mass composed chiefly of cholesterol, calcium salts, and bile pigments, formed in the gallbladder or in a bile duct. The presence of gallstones can lead to painful obstruction or infection and is sometimes treated with cholecystectomy.
A hard, pebblelike material deposited in the gallbladder or bile ducts by the process of chemical precipitation. Gallstones can cause considerable pain and can even obstruct the flow of bile from the gallbladder. On some occasions, the entire gallbladder must be removed by surgery.