See flux in Webster's New World College Dictionary
noun
a flowing or flow
the rate of flow of water, as the tide or current, through a defined area
a continuous movement or continual change: fashion is always in a state of flux
any excessive or unnatural discharge of fluid body matter, esp. from the bowels
a substance, as borax or rosin, used to help metals fuse together by preventing oxidation, as in soldering
in metallurgy, a substance added to metals while they are in a furnace, to remove impurities, promote fusing, etc., as a non-metallic material added to a furnace charge that has the ability to fuse with undesired matter and form a liquid slag that can run off more easily
Physics the rate of flow of energy, fluids, etc. across a surface
transitive verb
to make (a solid) melt
to fuse (metals) by melting
intransitive verb
Archaic to flow or stream out
See flux in American Heritage Dictionary 4
(flŭks)
noun
a. A flow or flowing.
b. A continued flow; a flood. See Synonyms at flow.
The flowing in of the tide.
Medicine The discharge of large quantities of fluid material from the body, especially the discharge of watery feces from the intestines.
Physics
a. The rate of flow of fluid, particles, or energy through a given surface.
c. The lines of force of an electric or magnetic field.
Constant or frequent change; fluctuation: “The newness and flux of the computer industry has meant many opportunities for women and minorities”(Connie Winkler).
Chemistry & Metallurgy A substance that aids, induces, or otherwise actively participates in fusing or flowing, as:
a. A substance applied to a surface to be joined by welding, soldering, or brazing to facilitate the flowing of solder and prevent formation of oxides.
b. A mineral added to the metals in a furnace to promote fusing or to prevent the formation of oxides.
c. An additive that improves the flow of plastics during fabrication.
d. A readily fusible glass or enamel used as a base in ceramic work.