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itesimal increment (Math.), an infinitesimally small variation considered in Differential Calculus. See Calculus. -- Method of increments (Math.), a calculus founded on the properties of the successive values of variable quantities and their differences or increments. It differs from the method of fluxions in treating…

ntity which is assumed to admit of no further division. Method of indivisibles, a kind of calculus, formerly in use, in which lines were considered as made up of an infinite number of points; surfaces, as made up of an infinite number of lines; and volumes, as made up of an infinite number of surfaces.…

indefinitely small; less than any assignable quantity or value; very small. Infinitesimal calculus, the different and the integral calculus, when developed according to the method used by Leibnitz, who regarded the increments given to variables as infinitesimal.

Pertaining to, or proceeding by, integration; as, the integral calculus. Integral calculus. See under Calculus.

ions. 3. Analysis, in which letters are used, including Algebra, Analytical Geometry, and Calculus. Each of these divisions is divided into pure or abstract, which considers magnitude or quantity abstractly, without relation to matter; and mixed or applied, which treats of magnitude as subsisting in material bodies, an…

ents, on the human body, to produce a curative or remedial effect, as in amputation, etc. Calculus of operations. See under Calculus.

-- Parsley piert (Bot.), a small herb (Alchemilla arvensis) formerly used as a remedy for calculus.

Of or pertaining to the kidneys; in the region of the kidneys. Renal calculus (Med.), a concretion formed in the excretory passages of the kidney. -- Renal capsules or glands, the suprarenal capsules. See under Capsule. -- Renal casts, Renal colic. (Med.) See under Cast, and Colic.

The calculus; fluxions. [R.]

alculous concretion, especially one in the kidneys or bladder; the disease arising from a calculus.

ied in calling Galileo and Napier blockheads because they never heard of the differential calculus. Macaulay.

coll. It was formerly called also lithic acid, in allusion to its occurrence in stone, or calculus.

Resembling, or being of the nature of, urine. Urinary calculus (Med.), a concretion composed of some one or more crystalline constituents of the urine, liable to be found in any portion of the urinary passages or in the pelvis of the kidney. -- Urinary pigments, (Physiol. Chem.), certain colored substances, urochrome,…

ombined effects of the precession of the equinoxes and the proper motion of the star. -- Calculus of variations. See under Calculus. -- Variation compass. See under Compass. -- Variation of the moon (Astron.), an inequality of the moon's motion, depending on the angular distance of the moon from the sun. It is great…

ied in calling Galileo and Napier blockheads because they never heard of the differential calculus." Macaulay. (b) In some American colleges, the lowest appointee of the junior year; sometimes, one especially popular in his class, without reference to scholarship. Formerly, it was a custom for classmates to present to…