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ra·di·us

npl  ra*dii  also  ra*di*us*es  :  the bone on the thumb side of the human forearm or on the corresponding part of the forelimb of vertebrates above fishes that in humans is movably articulated with the ulna at both ends so as to permit partial rotation about that bone, that bears on its inner aspect somewhat distal to the head a prominence for the insertion of the biceps tendon, and that has the lower end broadened for articulation with the proximal bones of the carpus so that rotation of the radius involves also that of the hand .
 
 
 
Similar sounding terms:  ra·dio·as·say  Rat·tus  RDS  reds 

 
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