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3 definitions found
 for Calculus
From The Collaborative International Dictionary of English v.0.48 :

  Mathematics \Math`e*mat"ics\, n. [F. math['e]matiques, pl., L.
     mathematica, sing., Gr. ? (sc. ?) science. See Mathematic,
     and -ics.]
     That science, or class of sciences, which treats of the exact
     relations existing between quantities or magnitudes, and of
     the methods by which, in accordance with these relations,
     quantities sought are deducible from other quantities known
     or supposed; the science of spatial and quantitative
     relations.
     [1913 Webster]
  
     Note: Mathematics embraces three departments, namely: 1.
           Arithmetic. 2. Geometry, including Trigonometry
           and Conic Sections. 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, and is consequently interwoven with
           physical considerations.
           [1913 Webster]

From The Collaborative International Dictionary of English v.0.48 :

  Calculus \Cal"cu*lus\, n.; pl. Calculi. [L, calculus. See
     Calculate, and Calcule.]
     1. (Med.) Any solid concretion, formed in any part of the
        body, but most frequent in the organs that act as
        reservoirs, and in the passages connected with them; as,
        biliary calculi; urinary calculi, etc.
        [1913 Webster]
  
     2. (Math.) A method of computation; any process of reasoning
        by the use of symbols; any branch of mathematics that may
        involve calculation.
        [1913 Webster]
  
     Barycentric calculus, a method of treating geometry by
        defining a point as the center of gravity of certain other
        points to which co["e]fficients or weights are ascribed.
        
  
     Calculus of functions, that branch of mathematics which
        treats of the forms of functions that shall satisfy given
        conditions.
  
     Calculus of operations, that branch of mathematical logic
        that treats of all operations that satisfy given
        conditions.
  
     Calculus of probabilities, the science that treats of the
        computation of the probabilities of events, or the
        application of numbers to chance.
  
     Calculus of variations, a branch of mathematics in which
        the laws of dependence which bind the variable quantities
        together are themselves subject to change.
  
     Differential calculus, a method of investigating
        mathematical questions by using the ratio of certain
        indefinitely small quantities called differentials. The
        problems are primarily of this form: to find how the
        change in some variable quantity alters at each instant
        the value of a quantity dependent upon it.
  
     Exponential calculus, that part of algebra which treats of
        exponents.
  
     Imaginary calculus, a method of investigating the relations
        of real or imaginary quantities by the use of the
        imaginary symbols and quantities of algebra.
  
     Integral calculus, a method which in the reverse of the
        differential, the primary object of which is to learn from
        the known ratio of the indefinitely small changes of two
        or more magnitudes, the relation of the magnitudes
        themselves, or, in other words, from having the
        differential of an algebraic expression to find the
        expression itself.
        [1913 Webster]

From WordNet (r) 3.0 (2006) :

  calculus
      n 1: 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" [syn: calculus, concretion]
      2: an incrustation that forms on the teeth and gums [syn:
         tartar, calculus, tophus]
      3: the branch of mathematics that is concerned with limits and
         with the differentiation and integration of functions [syn:
         calculus, infinitesimal calculus]

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