Source : Webster's Revised Unabridged Dictionary (1913)

Reflux \Re"flux`\ (r?"fl?ks`), a.
   Returning, or flowing back; reflex; as, reflux action.

Reflux \Re"flux`\, n. [F. reflux. See {Refluent}, {Flux}.]
   A flowing back, as the return of a fluid; ebb; reaction; as,
   the flux and reflux of the tides.

         All from me Shall with a fierce reflux on me redound.
                                                  --Milton.

Source : WordNet®

reflux
     n 1: an abnormal backward flow of body fluids
     2: the outward flow of the tide [syn: {ebb}]