n.
Pronunciation: ' fl ə ks
Function: noun
Etymology: Middle English, from Anglo-French & Medieval Latin; Anglo-French, from Medieval Latin fluxus, from Latin, flow, from fluere to flow ― more at FLUID
Date: 14th century
1 : a flowing of fluid from the body: as a : DIARRHEA b : DYSENTERY
2 : a continuous moving on or passing by (as of a stream)
3 : a continued flow : FLOOD
4 a : INFLUX b : CHANGE , FLUCTUATION <in a state of flux >
5 : a substance used to promote fusion (as of metals or minerals) especially : one (as rosin) applied to surfaces to be joined by soldering, brazing, or welding to clean and free them from oxide and promote their union
6 : the rate of transfer of fluid, particles, or energy across a given surface