Biliary calculus

gallstone.
an abnormal stonelike mass, usually of cholesterol, formed in the gallbladder or bile passages.
Historical Examples

Psychotherapy James J. Walsh

noun
(pathol) a small hard concretion of cholesterol, bile pigments, and lime salts, formed in the gall bladder or its ducts Also called bilestone
n.
gallstone
(gôl’stōn’)
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.