## fluxions

Noun

(plural form of *fluxion*)

- (obsolete, mathematics) differential calculus

- Both these methods, differing from that now employed, are interesting as preliminary steps towards the method of
**fluxions**and the differential calculus. - The second includes a "Method for the Quadrature of Parabolas," and a treatise "on Maxima and Minima, on Tangents, and on Centres of Gravity," containing the same solutions of a variety of problems as were afterwards incorporated into the more extensive method of
**fluxions**by Newton and Leibnitz. - Up to the time of the publication of the Principia in 1687 the method of
**fluxions**which had been invented by Newton, and had been of great assistance to him in his mathematical investigations, was still, except to Newton and his friends, a secret. - Newton's admirers in Holland had informed Dr Wallis that Newton's method of
**fluxions**passed there under the name of Leibnitz's Calculus Di fferentialis. - It was therefore thought necessary that an early opportunity should be taken of asserting Newton's claim to be the inventor of the method of
**fluxions**, and this was the reason for this method first appearing in Wallis's works.

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