1. (a.) Returning, or flowing back; reflex; as, reflux action.

2. (n.) A flowing back, as the return of a fluid; ebb; reaction; as, the flux and reflux of the tides.

Brownian movement Charybdis Maelstrom action and reaction advance angular motion answer ascending ascent automatic reaction autonomic reaction axial motion back stream backflow backflowing backing backset backsliding backward motion backward step backwash backwater bounceback career climbing countercurrent counterflow counterflux course current descending descent direct tide downward motion drift driftage ebb ebb and flow ebb tide ebbing echo eddy flight flood flood tide flow flux flux and reflux forward motion full tide gulf gurge high tide high water lapse low tide low water lunar tide maelstrom mounting neap neap tide oblique motion ongoing onrush opposite tide passage plunging predictable response progress radial motion random motion reaction recession recidivation recidivism reentry reflection reflex reflex action reflowing refluence regress regression regurgitation relapse reply respondence response retroaction retrocession retroflexion retrogradation retrogression retrusion return reverberation revulsion rip riptide rise rising rollback run rush set setback sideward motion sinking soaring solar tide spring tide sternway stream subsiding swirl thalassometer throwback tidal amplitude tidal current tidal current chart tidal flow tidal range tide tide chart tide gate tide gauge tide race tide rip tidewater tideway traject trajet trend twirl unthinking response upward motion vortex whirl whirlpool