Meaning of RADIO- in English

RADIO-

■ combining form

1》 denoting radio waves or broadcasting: radiogram.

2》 Physics connected with rays, radiation, or radioactivity: radiograph.

↘denoting artificially prepared radioisotopes: ~cobalt.

3》 Anatomy relating to the radius: ~carpal.

Concise Oxford English vocab.      Сжатый оксфордский словарь английского языка.