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asterism

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asterism


  2  definitions  found 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Asterism  \As`ter*ism\,  n.  [Gr.  ?,  fr  'asth`r  star;  cf  F. 
  ast['e]risme.] 
  1.  (Astron.) 
  a  A  constellation.  [Obs.] 
  b  A  small  cluster  of  stars. 
 
  2.  (Printing) 
  a  An  asterisk,  or  mark  of  reference.  [R.] 
  b  Three  asterisks  placed  in  this  manner,  [asterism],  to 
  direct  attention  to  a  particular  passage. 
 
  3.  (Crystallog.)  An  optical  property  of  some  crystals  which 
  exhibit  a  star-shaped  by  reflected  light,  as  star 
  sapphire,  or  by  transmitted  light,  as  some  mica. 
 
  From  WordNet  r  1.6  [wn]: 
 
  asterism 
  n  1:  (mineralogy)  a  six-rayed  star-shaped  figure  seen  in  some 
  crystal  structures  under  reflected  or  transmitted  light 
  2:  (astronomy)  a  cluster  of  stars  (or  a  small  constellation) 




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