n. & v.
n. 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.
v. 1 tr. & intr. make or become fluid. 2 tr. a fuse. b treat with a fusing flux.
[ ME f. OF flux or L fluxus f. fluere flux- flow ]