Pronunciation: (fluks),[key] —n. 1. a flowing or flow.
2. the flowing in of the tide.
3. continuous change, passage, or movement: His political views are in a state of flux. 4. Physics. a. the rate of flow of fluid, particles, or energy.
b. a quantity expressing the strength of a field of force in a given area.
5. Chem.,Metall. a. a substance used to refine metals by combining with impurities to form a molten mixture that can be readily removed.
b. a substance used to remove oxides from and prevent further oxidation of fused metal, as in soldering or hot-dip coating.
c. (in the refining of scrap or other metal) a salt or mixture of salts that combines with nonmetallic impurities, causing them to float or coagulate.
—v.t. 1. to melt; make fluid.
2. to fuse by the use of flux.
3. Obs.to purge.