4. (Chem. & Metal.) Any substance or mixture used to promote the fusion
of metals or minerals, as alkalies, borax, lime, fluorite.
White flux is the residuum of the combustion of a mixture of equal
parts of niter and tartar. It consists chiefly of the carbonate of
potassium, and is white. -- Black flux is the ressiduum of the
combustion of one part of niter and two of tartar, and consists
essentially of a mixture of potassium carbonate and charcoal.
5. (Med.) (a) A fluid discharge from the bowels or other part;
especially, an excessive and morbid discharge; as, the bloody flux or
dysentery. See Bloody flux. (b) The matter thus discharged.
6. (Physics) The quantity of a fluid that crosses a unit area of a
given surface in a unit of time.
Flux, a. [L. fluxus, p. p. of fluere. See Flux, n.] Flowing; unstable;
inconstant; variable.
The flux nature of all things here.
Barrow.
Flux, v. t. [imp. & p. p. Fluxed (flkst); p. pr. & vb. n. Fluxing.] 1.
To affect, or bring to a certain state, by flux.
He might fashionably and genteelly . . . have been dueled or fluxed
into another world.
South.