Meaning of RADIO- in English

RADIO-

radio- /reɪdiəʊ $ -dioʊ/ AmE prefix

[ Language: French ; Origin: Latin radius ; ⇨ ↑ radius ]

technical using radio waves:

radiopaging (=calling people by radio)

Longman Dictionary of Contemporary English.      Longman - Словарь современного английского языка.