fluxion

American  

[fluhk-shuhn] / ˈflʌk ʃən /

noun

1. an act of flowing; a flow or flux.

2. Mathematics. the derivative relative to the time.

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fluxion British  

/ ˈflʌkʃən /

noun

1. obsolete maths the rate of change of a function, especially the instantaneous velocity of a moving body; derivative

2. a less common word for flux flux

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Other Word Forms

• fluxional adjective
• fluxionally adverb
• fluxionary adjective

Etymology

Origin of fluxion

1535–45; < Middle French < Late Latin fluxiōn- (stem of fluxiō ) a flowing. See flux, -ion

Example Sentences

With fluxion abroad and fitful anxiety at home, millions of citizens sleep more easily at night because they believe their Prime Minister is in control.

From Time Magazine Archive

As a result, the English stuck to Newton’s fluxion notation rather than adopting Leibniz’s superior differential notation—cutting off their noses to spite their faces.

From "Zero: The Biography of a Dangerous Idea" by Charles Seife

It would be of particular interest to determine whether the torment of this tissue in any way interfered with the augmentation of bilious fluxion.

From "The Astonishing Life of Octavian Nothing, Traitor to the Nation, Volume I: The Pox Party" by M.T. Anderson

Newton disliked infinitesimals, the little os in his fluxion equations that sometimes acted like zeros and sometimes like nonzero numbers.

From "Zero: The Biography of a Dangerous Idea" by Charles Seife

Their bodies continually going up and down upon perpetual fluxion, they never could live if their minds did the same, like the minds of stationary landsmen.

From Mary Anerley : a Yorkshire Tale by Blackmore, R. D. (Richard Doddridge)