1. The discharge of a fluid material in large amount from a cavity or surface of the body. SEE ALSO: diarrhea. 2. Material discharged from the bowels. 3. A material used to remove oxides from the surface of molten metal and to protect it when casting; serves a similar purpose in soldering operations. Also, an ingredient in dental porcelain that by its lower melting temperature helps to bond the silica particles. 4. (J) The moles of a substance crossing through a unit area of a boundary layer or membrane per unit of time. SYN: f. density (1). 5. Bidirectional movement of a substance at a membrane or surface. 6. In diagnostic radiology, photon fluence per unit time. 7. The strength of a field of force ( e.g., magnetic) orthogonal to a unit area. 8. The rate of chemical or physical transformation or translocation of a substance per unit time. [L. fluxus, a flow]
- luminous f. the quantity of light emitted from a point source in a given time; its unit is the lumen.
- net f. the difference between the two unidirectional fluxes.
- unidirectional f. the f. of a substance from one surface of a boundary layer or membrane to the other, disregarding any counterbalancing f. in the other direction, as measured by tracer technique.

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flux 'fləks n
1 a) a flowing or discharge of fluid from the body esp. when excessive or abnormal: as (1) diarrhea (2) dysentery
b) the matter discharged in a flux
2) the rate of transfer of fluid, particles, or energy across a given surface

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an abnormally copious flow from an organ or cavity. Alvine flux is diarrhoea.

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(fluks) [L. fluxus] 1. the rate of the flow of some quantity (or magnetic field) per unit area. 2. a substance that maintains the cleanliness of metals to be united and facilitates the easy flow and attachment of solder.

Medical dictionary. 2011.

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  • Flux — Flux, a. [L. fluxus, p. p. of fluere. See {Flux}, n.] Flowing; unstable; inconstant; variable. [1913 Webster] The flux nature of all things here. Barrow. [1913 Webster] …   The Collaborative International Dictionary of English

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