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