Relating to both radius and ulna. ... (05 Mar 2000) ... 
(ra″de-o-ul´nәr) pertaining to the radius and ulna.
Type: Term Pronunciation: rā′dē-ō-ŭl′năr Definitions: 1. Relating to both radius and ulna.
ulnoradial, radioulnar Referring to the ulna and the radius (bone on the outer or thumb side of the forearm) and denoting the two articulations, ligaments, etc., between them. A related 'elbow' family of words: ancon-.