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ellipticity

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ellipticity


  2  definitions  found 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Ellipticity  \El`lip*tic"i*ty\,  n.  [Cf.  F.  ellipticit['e].] 
  Deviation  of  an  ellipse  or  a  spheroid  from  the  form  of  a 
  circle  or  a  sphere;  especially,  in  reference  to  the  figure  of 
  the  earth,  the  difference  between  the  equatorial  and  polar 
  semidiameters,  divided  by  the  equatorial;  thus  the 
  ellipticity  of  the  earth  is  1/29966. 
 
  Note:  Some  writers  use  ellipticity  as  the  ratio  of  the 
  difference  of  the  two  semiaxes  to  the  minor  axis, 
  instead  of  the  major.  --Nichol. 
 
  From  WordNet  r  1.6  [wn]: 
 
  ellipticity 
  n  :  the  property  possessed  by  a  rounded  shape  that  is  flattened 
  at  the  poles;  "the  oblateness  of  the  planet"  [syn:  {oblateness}] 




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