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radiusmore about radius


  4  definitions  found 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
  Radius  \Ra"di*us\,  n.;  pl  L.  {Radii};  E.  {Radiuses}.  [L.,  a 
  staff,  rod,  spoke  of  a  wheel,  radius,  ray.  See  {Ray}  a 
  divergent  line.] 
  1.  (Geom.)  A  right  line  drawn  or  extending  from  the  center  of 
  a  circle  to  the  periphery;  the  semidiameter  of  a  circle  or 
  2.  (Anat.)  The  preaxial  bone  of  the  forearm,  or  brachium, 
  corresponding  to  the  tibia  of  the  hind  limb.  See  Illust. 
  of  {Artiodactyla}. 
  Note:  The  radius  is  on  the  same  side  of  the  limb  as  the 
  thumb,  or  pollex,  and  in  man  it  so  articulated  that  its 
  lower  end  is  capable  of  partial  rotation  about  the 
  3.  (Bot.)  A  ray,  or  outer  floret,  of  the  capitulum  of  such 
  plants  as  the  sunflower  and  the  daisy.  See  {Ray},  2. 
  4.  pl  (Zo["o]l.) 
  a  The  barbs  of  a  perfect  feather. 
  b  Radiating  organs,  or  color-markings,  of  the  radiates. 
  5.  The  movable  limb  of  a  sextant  or  other  angular  instrument. 
  {Radius  bar}  (Math.),  a  bar  pivoted  at  one  end  about  which 
  it  swings,  and  having  its  other  end  attached  to  a  piece 
  which  it  causes  to  move  in  a  circular  arc. 
  {Radius  of  curvature}.  See  under  {Curvature}. 
  From  WordNet  r  1.6  [wn]: 
  n  1:  the  length  of  a  line  segment  between  the  center  and 
  circumference  of  a  circle  or  sphere  [syn:  {r}] 
  2:  a  straight  line  from  the  center  to  the  perimeter  of  a  circle 
  (or  from  the  center  to  the  surface  of  a  sphere) 
  3:  a  circular  region  whose  area  is  indicated  by  the  length  of 
  its  radius;  "they  located  it  within  a  radius  of  2  miles" 
  4:  the  outer  and  slightly  shorter  of  the  two  bones  of  the  human 
  5:  a  radial  member  of  a  wheel  joining  the  hub  to  the  rim  [syn: 
  From  The  Free  On-line  Dictionary  of  Computing  (13  Mar  01)  [foldoc]: 
  {Remote  Authentication  Dial-In  User  Service} 
  From  V.E.R.A.  --  Virtual  Entity  of  Relevant  Acronyms  13  March  2001  [vera]: 
  Remote  Authentication  Dial-In  User  Service  (RFC  2138) 

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