n. & v.
1. a process of flowing or flowing out.
2 an issue or discharge.
3 continuous change (in a state of flux).
4 Metallurgy a substance mixed with a metal etc. to promote fusion.
5 Physics a the rate of flow of any fluid across a given area. b the amount of fluid crossing an area in a given time.
6 Physics the amount of radiation or particles incident on an area in a given time.
7 Electr. the total electric or magnetic field passing through a surface.
8 Med. an abnormal discharge of blood or excrement from the body.
1. tr. & intr. make or become fluid.
2 tr. a fuse. b treat with a fusing flux.
Etymology: ME f. OF flux or L fluxus f. fluere flux- flow