radio
noun
[ ˈreɪdɪəʊ ]
• the transmission and reception of electromagnetic waves of radio frequency, especially those carrying sound messages.
• "cellular phones are linked by radio rather than wires"
• the activity or industry of broadcasting sound programmes to the public.
• "she has written much material for radio"
• an apparatus for receiving radio programmes.
• "he switched the radio on"
radio
verb
• communicate or send a message by radio.
• "we radioed for help"
Origin:
early 20th century: from radio- in radio-telegraphy and radio-telegram, based on Latin radius ‘ray, beam’.
radio-
combining form
• denoting radio waves or broadcasting.
• "radio-controlled"
• connected with rays, radiation, or radioactivity.
• "radiogenic"
• belonging to the radius in conjunction with some other part.
• "radio-carpal"
Origin:
late 19th century: from radio or radius.
