DuckCorp Dico

Found one definition

1.                 From WordNet (r) 3.0 (2006):
                   
   
   
                   
                     
   radius
       n 1: the length of a line segment between the center and
            circumference of a circle or sphere [syn: radius, 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
          forearm
       5: support consisting of a radial member of a wheel joining the
          hub to the rim [syn: spoke, wheel spoke, radius]