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helixes

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helixes


  1  definition  found 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Helix  \He"lix\,  n.;  pl  L.  {Helices},  E.  {Helixes}.  [L.  helix, 
  Gr  ?,  ?,  fr  ?  to  turn  round;  cf  L.  volvere  and  E.  volute, 
  voluble.] 
  1.  (Geom.)  A  nonplane  curve  whose  tangents  are  all  equally 
  inclined  to  a  given  plane.  The  common  helix  is  the  curve 
  formed  by  the  thread  of  the  ordinary  screw.  It  is 
  distinguished  from  the  spiral,  all  the  convolutions  of 
  which  are  in  the  plane. 
 
  2.  (Arch.)  A  caulicule  or  little  volute  under  the  abacus  of 
  the  Corinthian  capital. 
 
  3.  (Anat.)  The  incurved  margin  or  rim  of  the  external  ear. 
  See  Illust.  of  {Ear}. 
 
  4.  (Zo["o]l.)  A  genus  of  land  snails,  including  a  large 
  number  of  species. 
 
  Note:  The  genus  originally  included  nearly  all  shells,  but  is 
  now  greatly  restricted.  See  {Snail},  {Pulmonifera}. 




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