Also found in: Thesaurus, Medical, Wikipedia.


a. A flow or flowing.
b. Continual change.
2. Archaic
b. fluxions Differential calculus.

[French, from Late Latin flūxiō, flūxiōn-, from Latin flūxus, flux; see flux.]

flux′ion·al adj.
flux′ion·al·ly adv.


1. (Mathematics) maths obsolete the rate of change of a function, esp the instantaneous velocity of a moving body; derivative
2. a less common word for flux1, flux2
[C16: from Late Latin fluxiō a flowing]
ˈfluxional, ˈfluxionary adj
ˈfluxionally adv


(ˈflʌk ʃən)

1. an act of flowing; flow or flux.
2. continuous change.
3. Math. the derivative relative to the time.
[1535–45; < Middle French < Late Latin fluxiō, for Latin fluctio]
flux′ion•al, flux′ion•ar•y, adj.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.fluxion - a flow or discharge
flow, flowing - the motion characteristic of fluids (liquids or gases)
References in periodicals archive ?
Fluxion Biosciences, a privately held drug discovery tools company, announced today that it has added 4 new senior management positions and expanded sales and technical support globally.
CCV's digital healthcare investments in addition to Gene Security Networks include AssureRX, Cellscope, Fluxion Biosciences, Geneweave Biosciences and Tibion.
Fluxion Biosciences today announced that it has signed a distribution agreement for EMD Millipore's PrecisION[R] range of ion channel cell lines.
Fluxion Biosciences today announced that it has introduced F1 giga-ohm seal plates for the IonFlux automated patch clamp system.
Fibralign Corporation; Finox Biotech; Fluxion Biosciences; Fluxome A/S; Formatech, Inc.
Fluxion Biosciences announced today that the Karp Laboratory at the Brigham and Women's Hospital (BWH) has purchased the BioFlux 1000 system, which will be applied in their stem cell homing research.
Pernod Ricard was advised in this transaction by Fluxion Advisors Ltd.
Patients with prostatitis may have contra fluxion, oppressed urethra and swelling.
Exiqon A/S, Exosomics Siena SpA, Fermiscan Holdings Limited, Fina Biotech, Fluxion Biosciences, Inc.
Exact Sciences Corporation, Exiqon A/S, Exosomics Siena SpA, Fina Biotech, Fluxion Biosciences, Inc.
Ce ci etant, on ne peut alors que se rejouir devant cette nouvelle realisation qui permettra, il est vrai, d'alleger cette dense fluxion dans les facultes en question, de garantir un enseignement de plus en pus performant et assurer une meilleure proximite dans un territoire immense et complexe.