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concentration
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English Dictionary: concentration by the DICT Development Group
3 results for concentration
From WordNet (r) 3.0 (2006) [wn]:
concentration
n
  1. the strength of a solution; number of molecules of a substance in a given volume
  2. the spatial property of being crowded together
    Synonym(s): concentration, density, denseness, tightness, compactness
    Antonym(s): dispersion, distribution
  3. strengthening the concentration (as of a solute in a mixture) by removing diluting material
    Antonym(s): dilution
  4. increase in density
  5. complete attention; intense mental effort
    Synonym(s): concentration, engrossment, absorption, immersion
  6. bringing together military forces
  7. great and constant diligence and attention
    Synonym(s): assiduity, assiduousness, concentration
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
   Dephlegmation \De`phleg*ma"tion\, n. [Cf. F. d[82]flegmation.]
      (Chem.)
      The operation of separating water from spirits and acids, by
      evaporation or repeated distillation; -- called also
      {concentration}, especially when acids are the subject of it.
      [Obs.]

From Webster's Revised Unabridged Dictionary (1913) [web1913]:
   Concentration \Con`cen*tra"tion\, n. [Cf. F. concentration.]
      1. The act or process of concentrating; the process of
            becoming concentrated, or the state of being concentrated;
            concentration.
  
                     Concentration of the lunar beams.      --Boyle.
  
                     Intense concetration of thought.         --Sir J.
                                                                              Herschel.
  
      2. The act or process of reducing the volume of a liquid, as
            by evaporation.
  
                     The acid acquires a higher degree of concentration.
                                                                              --Knight.
  
      3. (Metal.) The act or process of removing the dress of ore
            and of reducing the valuable part to smaller compass, as
            by currents of air or water.
No guarantee of accuracy or completeness!
©TU Chemnitz, 2006-2024
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