Main entry: infinitesimal calculus, calculus
Definition: the branch of mathematics that is concerned with limits and with the differentiation and integration of functions
Main entry: calculus, concretion
Definition: a hard lump produced by the concretion of mineral salts; found in hollow organs or ducts of the body
Usage: renal calculi can be very painful
Main entry: tartar, tophus, calculus
Definition: an incrustation that forms on the teeth and gums