from the GNU version of the Collaborative International Dictionary of English.

  • noun plural (Math.) See fluxion, 6(b).

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun obsolete, mathematics differential calculus


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  • In Germany Mr. Leibnitz was considered as the inventor of the differences or moments, called fluxions, and Mr. Bernoulli claimed the integral calculus.

    Letter XVII-On Infinites in Geometry, and Sir Isaac Newton’s Chronology

  • Between French, therefore, and fluxions, and moreover, the French method of fluxions, which is somewhat peculiar, I have had my hands pretty full.

    Memoirs of 30 Years with the Indian Tribes on the American Frontiers

  • In Germany Mr. Leibnitz was considered as the inventor of the differences or moments, called fluxions, and Mr. Bernouilli claimed the integral calculus.

    Letters on England

  • This is, as any troglodyte with an abacus can tell you, that branch of fluxions pertaining to the bits of reality that are changing too fast for the proper application of regular fluxions.

    Too Fast to be Fat

  • De quadratura curvarum he remarks that there is no necessity to introduce into the method of fluxions any argument about infinitely small quantities.

    Continuity and Infinitesimals

  • (A quadrature is the inverse problem, that of determining the fluents when the fluxions are given.)

    Continuity and Infinitesimals

  • He integrated Leibniz's differential calculus and Newton's method of fluxions into mathematical analysis.

    Euler, Leonhard

  • And I've forgotten all the fluxions I ever learned.

    Rabett Run

  • The problem of determining a tangent to a curve is transformed into the problem of finding the relationship between the fluxions x· and z· when presented with an equation representing the relationship between the fluents x and z.

    Continuity and Infinitesimals

  • “There is no space in void,” exclaimed Leibnitz, after having admitted a void; but when he admitted a void, he had not embroiled himself with Newton, nor disputed with him on the calculus of fluxions, of which Newton was the inventor.

    A Philosophical Dictionary


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  • "Nature and Nature's Laws lay hid in night;

    God said, 'Let Newton be!' -- And all was light."

    December 16, 2008