calcium carbonate

Definition of calcium carbonate

calcium carbonate

(KAL-see-um KAR-buh-nayt)
A form of the mineral calcium that is used to prevent or treat osteoporosis (a decrease in bone mass and density) and to treat heartburn and upset stomach. It is also being studied in the prevention of bone problems in people with cancer. It is a type of dietary supplement.

Source: NCI Dictionary of Cancer Terms