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4 definitions found
 for fluid
From The Collaborative International Dictionary of English v.0.48 :

  Fluid \Flu"id\ (fl[=u]"[i^]d), a. [L. fluidus, fr. fluere to
     flow: cf. F. fluide. See Fluent.]
     Having particles which easily move and change their relative
     position without a separation of the mass, and which easily
     yield to pressure; capable of flowing; liquid or gaseous.
     [1913 Webster]

From The Collaborative International Dictionary of English v.0.48 :

  Fluid \Flu"id\, n.
     A fluid substance; a body whose particles move easily among
     themselves.
     [1913 Webster]
  
     Note: Fluid is a generic term, including liquids and gases as
           species. Water, air, and steam are fluids. By analogy,
           the term was sometimes applied to electricity and
           magnetism, as in phrases electric fluid, magnetic
           fluid, though not strictly appropriate; such usage has
           disappeared.
           [1913 Webster +PJC]
  
     Fluid dram, or Fluid drachm, a measure of capacity equal
        to one eighth of a fluid ounce.
  
     Fluid ounce.
     (a) In the United States, a measure of capacity, in
         apothecaries' or wine measure, equal to one sixteenth of
         a pint or 29.57 cubic centimeters. This, for water, is
         about 1.04158 ounces avoirdupois, or 455.6 grains.
     (b) In England, a measure of capacity equal to the twentieth
         part of an imperial pint. For water, this is the weight
         of the avoirdupois ounce, or 437.5 grains.
  
     Fluids of the body. (Physiol.) The circulating blood and
        lymph, the chyle, the gastric, pancreatic, and intestinal
        juices, the saliva, bile, urine, aqueous humor, and muscle
        serum are the more important fluids of the body. The
        tissues themselves contain a large amount of combined
        water, so much, that an entire human body dried in vacuo
        with a very moderate degree of heat gives about 66 per
        cent of water.
  
     Burning fluid, Elastic fluid, Electric fluid, Magnetic
     fluid, etc. See under Burning, Elastic, etc.
        [1913 Webster]

From WordNet (r) 3.0 (2006) :

  fluid
      adj 1: subject to change; variable; "a fluid situation fraught
             with uncertainty"; "everything was unstable following the
             coup" [syn: fluid, unstable]
      2: characteristic of a fluid; capable of flowing and easily
         changing shape [syn: fluid, runny]
      3: smooth and unconstrained in movement; "a long, smooth
         stride"; "the fluid motion of a cat"; "the liquid grace of a
         ballerina" [syn: fluent, fluid, liquid, smooth]
      4: in cash or easily convertible to cash; "liquid (or fluid)
         assets" [syn: fluid, liquid]
      5: affording change (especially in social status); "Britain is
         not a truly fluid society"; "upwardly mobile" [syn: fluid,
         mobile]
      n 1: a substance that is fluid at room temperature and pressure
      2: continuous amorphous matter that tends to flow and to conform
         to the outline of its container: a liquid or a gas

From Moby Thesaurus II by Grady Ward, 1.0 :

  106 Moby Thesaurus words for "fluid":
     able to adapt, adaptable, adjustable, aerodynamics, afterdamp, air,
     alterable, alterative, aqueous, atmosphere, beverage, blackdamp,
     blood, breath, changeable, changeful, checkered, chokedamp, cloud,
     damp, drink, effluvium, ever-changing, exhalation, fetid air,
     firedamp, flatus, flexible, flowing, fluent, fluid extract,
     fluid mechanics, fluidal, fluidic, fluxible, fluxile, fluxional,
     fluxionary, formless, fume, gas, halogen gas, hydraulics,
     hydrogeology, ichor, impermanent, indefinite, inert gas, juice,
     juicy, kaleidoscopic, latex, liquid, liquid extract, liquidy,
     liquor, malaria, malleable, many-sided, mephitis, mercurial,
     metamorphic, miasma, milk, mobile, modifiable, movable, mutable,
     nonuniform, permutable, plastic, pliant, pneumatics, protean,
     proteiform, puff of smoke, reek, resilient, rubbery, running,
     runny, sap, sappy, semiliquid, shifting, smoke, smudge, solution,
     steam, succulent, supple, transient, transitory, uncertain,
     unfixed, unformed, unsettled, unstable, unsteady, vapor, variable,
     volatile, water, water vapor, watery, whey
  
  

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