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(r"d-). 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. Ra"dio (), a.Of or pertaining to, or employing, or operated by, radiant energy, specifically that of electric waves; hence, pertaining to, or employed in, radiotelegraphy. スポンサード リンク
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