Ra"di*o (?), a. Of or pertaining to, or employing, or operated by, radiant energy, specifically that of electric waves; hence, pertaining to, or employed in, radiotelegraphy.
Ra"di*o- (rā"d&ibreve;*&osl;-). A combining form indicating connection with, or relation to, a radius or ray; specifically
(Anat.), with the radius of the
forearm; as, radio-ulnar, radio- muscular, radio-carpal.