fluxions

enUK

flux·ion

F0210400 (flŭk′shən)n.1. a. A flow or flowing.b. Continual change.2. Archaic a. See derivative.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.