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lemniscate

lemniscate


  1  definition  found 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Lemniscata  \Lem`nis*ca"ta\  (l[e^]m`n[i^]s*k[=a]"t[.a]), 
  Lemniscate  \Lem*nis"cate\  (l[e^]m*n[i^]s"k[asl]t),  n.  [L. 
  lemniscatus  adorned  with  ribbons,  fr  lemniscus  a  ribbon 
  hanging  down  Gr  lhmni`skos.]  (Geom.) 
  A  curve  in  the  form  of  the  figure  8,  with  both  parts 
  symmetrical,  generated  by  the  point  in  which  a  tangent  to  an 
  equilateral  hyperbola  meets  the  perpendicular  on  it  drawn 
  from  the  center.