calculus: Meaning and Definition of

cal•cu•lus

1. a method of calculation, esp. one of several highly systematic methods of treating problems by a special system of algebraic notations, as differential or integral calculus.
2. a stone, or concretion, formed in the gallbladder, kidneys, or other parts of the body.
3. Also calleda hard, yellowish to brownish-black deposit on teeth formed largely through the mineralization of dead bacteria in dental plaques by the calcium salts in salivary secretions and subgingival transudates.
4. calculation: the calculus of political appeal.