radio

Multiple Entries:
  radio    radio-  

Concise Oxford English Dictionary © 2008 Oxford University Press:
radio/ˈreɪdiəʊ/

▶noun (pl. radios)

• 1 the transmission and reception of radio waves, especially those carrying audio messages.

• 2 the activity of broadcasting sound to the public.

  ■ a broadcasting station or channel.

• 3 an apparatus for receiving radio programmes.

  ■ an apparatus capable of receiving and transmitting radio messages.

▶verb (radioes, radioing, radioed) send a message by radio.

■ communicate with by radio.

– origin early 20th cent.: abbrev. of radio-telephone.

Concise Oxford English Dictionary © 2008 Oxford University Press:
radio-/ˈreɪdiəʊ/

▶combining form

• 1 denoting radio waves or broadcasting: radiogram.

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

  ■ denoting artificially prepared radioisotopes: radio-cobalt.

• 3 Anatomy relating to the radius: radio-carpal.