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concentration

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concentration


  3  definitions  found 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Dephlegmation  \De`phleg*ma"tion\,  n.  [Cf.  F.  d['e]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. 
 
  From  WordNet  r  1.6  [wn]: 
 
  concentration 
  n  1:  the  strength  of  a  solution;  number  of  molecules  of  a 
  substance  in  a  given  volume  (expressed  as  moles/cubic 
  meter) 
  2:  the  spatial  property  of  being  crowded  together  [syn:  {density}, 
  {denseness},  {compactness}]  [ant:  {distribution}] 
  3:  strengthening  the  concentration  (as  of  a  solute  in  a 
  mixture)  by  removing  extraneous  material  [ant:  {dilution}] 
  4:  increase  in  density 
  5:  complete  attention;  intense  mental  effort  [syn:  {engrossment}, 
  {absorption}] 
  6:  bringing  together  military  forces 
  7:  great  diligence  [syn:  {assiduity},  {assiduousness}] 




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