flux

Short definition from Wiktionary

Noun

1. 1
   The act of flowing; a continuous moving on or passing by, as of a flowing stream.
2. 2
   A state of ongoing change.
3. 3
   A chemical agent for cleaning metal prior to soldering or welding.
4. 4
   The rate of transfer of energy (or another physical quantity), especially an electric or magnetic field, through a given surface.
5. 5
   A disease which causes diarrhea, especially dysentery.
6. 6
   Diarrhea or other fluid discharge from the body.
7. 7
   The state of being liquid through heat; fusion.

Verb

1. 1
   To use flux on.
2. 2
   To melt.
3. 3
   To flow as a liquid.

Adjective

1. 1
   Flowing; unstable; inconstant; variable.