from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A flow or flowing.
  • n. A continued flow; a flood. See Synonyms at flow.
  • n. The flowing in of the tide.
  • n. Medicine The discharge of large quantities of fluid material from the body, especially the discharge of watery feces from the intestines.
  • n. Physics The rate of flow of fluid, particles, or energy through a given surface.
  • n. Physics See flux density.
  • n. Physics The lines of force of an electric or magnetic field.
  • n. Constant or frequent change; fluctuation: "The newness and flux of the computer industry has meant many opportunities for women and minorities” ( Connie Winkler).
  • n. Chemistry & Metallurgy A substance that aids, induces, or otherwise actively participates in fusing or flowing, as:
  • n. Chemistry & Metallurgy A substance applied to a surface to be joined by welding, soldering, or brazing to facilitate the flowing of solder and prevent formation of oxides.
  • n. Chemistry & Metallurgy A mineral added to the metals in a furnace to promote fusing or to prevent the formation of oxides.
  • n. Chemistry & Metallurgy An additive that improves the flow of plastics during fabrication.
  • n. Chemistry & Metallurgy A readily fusible glass or enamel used as a base in ceramic work.
  • transitive v. To melt; fuse.
  • transitive v. To apply a flux to.
  • intransitive v. To become fluid.
  • intransitive v. To flow; stream.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A state of ongoing change.
  • n. A chemical agent for cleaning metal prior to soldering or welding.
  • n. The rate of transfer of energy (or another physical quantity) through a given surface, specifically electric flux, magnetic flux.
  • n. A disease which causes diarrhea, especially dysentery.
  • v. To use flux.
  • v. To melt.

from the GNU version of the Collaborative International Dictionary of English

  • adj. Flowing; unstable; inconstant; variable.
  • n. The act of flowing; a continuous moving on or passing by, as of a flowing stream; constant succession; change.
  • n. The setting in of the tide toward the shore, -- the ebb being called the reflux.
  • n. The state of being liquid through heat; fusion.
  • n. Any substance or mixture used to promote the fusion of metals or minerals, as alkalies, borax, lime, fluorite.
  • n.
  • n. A fluid discharge from the bowels or other part; especially, an excessive and morbid discharge. See Bloody flux.
  • n. The matter thus discharged.
  • n. The quantity of a fluid that crosses a unit area of a given surface in a unit of time.
  • transitive v. To affect, or bring to a certain state, by flux.
  • transitive v. To cause to become fluid; to fuse.
  • transitive v. To cause a discharge from; to purge.

from The Century Dictionary and Cyclopedia

  • n. The act of flowing; a flowing, as of a fluid; flow in general, but now most commonly an occasional flow; an outpouring or effusion of anything.
  • n. Hence Continual change; the mode of being of that which is instantaneous, ceasing to exist as soon as it begins to exist.
  • n. In pathology, a morbid or abnormal issue or discharge of matter, as blood, mucus, or pus, from any mucous surface of the internal vessels or viscera: as, the bloody flux (dysentery).
  • n. Matter which is discharged in a flux; defluxion; excrement.
  • n. A flowing together; concourse; confluence.
  • n. Fusion; conversion to a liquid state by the operation of heat.
  • n. In metallurgy, any substance or mixture used to promote the fusion of metals or minerals, as alkalis, borax, tartar, and other saline matter, or, in large operations, limestone or fluor-spar.
  • n. In mathematics, a vector which is referred to a unit of area.
  • Flowing; changing; inconstant; variable.
  • To flood; overflow.
  • In medicine, to cause a flux or evacuation from; salivate; purge.
  • To clear or clean out by or as if by an evacuation; relieve by purging, literally or figuratively.
  • To melt; fuse; make fluid.
  • To flow or change.
  • n. Continuous motion.
  • n. In enameling, a colorless vitreous base, composed of silica mixed with minium or red lead and potash or carbonate of soda. See fondant, 2.
  • n. In botany, the slimy exudation from wounds in the bark of various trees.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. in constant change
  • n. the rate of flow of energy or particles across a given surface
  • n. excessive discharge of liquid from a cavity or organ (as in watery diarrhea)
  • v. move or progress freely as if in a stream
  • n. the lines of force surrounding a permanent magnet or a moving charged particle
  • v. become liquid or fluid when heated
  • v. mix together different elements
  • n. a state of uncertainty about what should be done (usually following some important event) preceding the establishment of a new direction of action
  • n. a flow or discharge
  • n. (physics) the number of changes in energy flow across a given surface per unit area
  • n. a substance added to molten metals to bond with impurities that can then be readily removed


from The American Heritage® Dictionary of the English Language, 4th Edition

Middle English, from Old French, from Latin flūxus, from past participle of fluere, to flow.

from Wiktionary, Creative Commons Attribution/Share-Alike License

From Latin fluxus ("flow").



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  • An abnormally copious flowing of blood, excrement, etc. from the bowels or other organs; a morbid or excessive discharge. spec. An early name for dysentery; also red flux, flux of blood, bloody flux.

    Also, the way my dad uses it: In Metallurgy, Any substance that is mixed with a metal etc. to facilitate its fusion; also a substance used to render colours fusible in enamelling and in the colouring of porcelain and glass.

    February 23, 2007