CALCULOUS, a. [Supra.] 1. Stony; gritty; hard like stone; as a calculous concretion.2. In mathematics; Differential calculus, is the arithmetic of the infinitely small differences of variable quantities; the method of differencing quantities, or of finding an infinitely small quantity, which, being taken infinite times, shall be equal to a given quantity. This coincides with the doctrine of fluxions.3. Exponential calculus, is a method of differencing exponential quantities; or of finding and summing up the differentials or moments of exponential quantities; or at least of bringing them to geometrical constructions.4. Integral calculus, is a method of integrating or summing u moments or differential quantities; the inverse of the differential calculus.5. Literal calculus, is specious arithmetic or algebra.
