radio

 
Pronunciation: /ˈreɪdɪəʊ/

noun (plural radios)

  • 1 [mass noun] the transmission and reception of electromagnetic waves of radio frequency, especially those carrying sound messages: cellular phones are linked by radio rather than wires
  • 2 [mass noun] the activity or industry of broadcasting sound programmes to the public: she has written much material for radio [as modifier]: a radio station
  • radio programmes: we used to listen to a lot of radio
  • [in names] a broadcasting station or channel: Radio One
  • 3an apparatus for receiving radio programmes: he switched the radio on
  • an apparatus capable of both receiving and transmitting radio messages between individuals, ships, planes, etc.: a ship-to-shore radio

verb (radioes, radioing, radioed)

[no object]
  • communicate or send a message by radio: we radioed for help
  • [with object] communicate with (a person or place) by radio: we’ll radio Athens right away

Origin:

early 20th century: abbreviation of radio-telephony

Spelling rule

Make the plural of radio in the usual way, by adding -s: (radios).

Spelling help

The verb forms are: (radioes, radioing, radioed).