Source : Webster's Revised Unabridged Dictionary (1913)

Flux \Flux\, a. [L. fluxus, p. p. of fluere. See {Flux}, n.]
   Flowing; unstable; inconstant; variable.

         The flux nature of all things here.      --Barrow.

Flux \Flux\ (fl[u^]ks), n. [L. fluxus, fr. fluere, fluxum, to
   flow: cf.F. flux. See {Fluent}, and cf. 1st & 2d {Floss},
   {Flush}, n., 6.]
   1. The act of flowing; a continuous moving on or passing by,
      as of a flowing stream; constant succession; change.

            By the perpetual flux of the liquids, a great part
            of them is thrown out of the body.    --Arbuthnot.

            Her image has escaped the flux of things, And that
            same infant beauty that she wore Is fixed upon her
            now forevermore.                      --Trench.

            Languages, like our bodies, are in a continual flux.
                                                  --Felton.

   2. The setting in of the tide toward the shore, -- the ebb
      being called the {reflux}.

   3. The state of being liquid through heat; fusion.

   4. (Chem. & Metal.) Any substance or mixture used to promote
      the fusion of metals or minerals, as alkalies, borax,
      lime, fluorite.

   Note: {White flux} is the residuum of the combustion of a
         mixture of equal parts of niter and tartar. It consists
         chiefly of the carbonate of potassium, and is white. --
         {Black flux} is the ressiduum of the combustion of one
         part of niter and two of tartar, and consists
         essentially of a mixture of potassium carbonate and
         charcoal.

   5. (Med.)
      (a) A fluid discharge from the bowels or other part;
          especially, an excessive and morbid discharge; as, the
          bloody flux or dysentery. See {Bloody flux}.
      (b) The matter thus discharged.

   6. (Physics) The quantity of a fluid that crosses a unit area
      of a given surface in a unit of time.

Flux \Flux\, v. t. [imp. & p. p. {Fluxed} (fl[u^]kst); p. pr. &
   vb. n. {Fluxing}.]
   1. To affect, or bring to a certain state, by flux.

            He might fashionably and genteelly . . . have been
            dueled or fluxed into another world.  --South.

   2. To cause to become fluid; to fuse. --Kirwan.

   3. (Med.) To cause a discharge from; to purge.

Source : WordNet®

flux
     n 1: the rate of flow of energy or particles across a given
          surface
     2: a flow or discharge [syn: {fluxion}]
     3: a substance added to molten metals to bond with impurities
        that can then be readily removed
     4: excessive discharge of liquid from a cavity or organ (as in
        watery diarrhea)
     5: a state of uncertainty about what should be done (usually
        following some important event) preceding the
        establishment of a new direction of action; "the flux
        following the death of the emperor" [syn: {state of flux}]
     6: the lines of force surrounding a permanent magnet or a
        moving charged particle [syn: {magnetic field}, {magnetic
        flux}]
     7: (physics) the number of flux changes per unit area [syn: {flux
        density}]
     8: in constant change; "his opinions are in flux"; "the newness
        and flux of the computer industry"

flux
     v 1: move or progress freely as if in a stream; "The crowd flowed
          out of the stadium" [syn: {flow}]
     2: become liquid or fluid  when heated; "the frozen fat
        liquefied" [syn: {liquefy}, {liquify}]
     3: mix together different elements; "The colors blend well"
        [syn: {blend}, {mix}, {conflate}, {commingle}, {immix}, {fuse},
         {coalesce}, {meld}, {combine}, {merge}]