See Also: Radio 4(dictionary)
Radio 3(dictionary)
Radio 2(dictionary)
radio(medicine)
radio(1)(dictionary)
radio(2)(dictionary)
Radio 1(dictionary)
radio-(3)(dictionary)
radio(encyclopedia)
radio-(dictionary)

radio(1) (iou)



radio noun. Pl. -os. E20.
[Independent use of RADIO- in RADIO-TELEPHONY, RADIO-TELEGRAM.]
I.
The transmission and reception of radio-frequency electromagnetic waves, esp. as a means of communication that does not need a connecting wire; wireless telephony or telegraphy. E20.
A. L. Albert In radio, the feed-back coil of an oscillator is sometimes called a tickler. Police Review They..sent a message by radio.
Organized sound broadcasting by such means; sound broadcasting as a medium of communication or an art form. E20.
local radio: see LOCAL adjective. steam radio: see STEAM noun 8b.
Daily Telegraph The programme itself was not an outstanding piece of radio. Times He welcomed the competition of commercial radio.
(Radio.) (Forming part of the proper name of) a radio station or service. E20.
Radio One, Radio Two, Radio Three, Radio Four, Radio Five the five national radio networks of the BBC since 1967 (Radio Five since 1990).
Listener Ask Goose Bay Radio if they have any other traffic. Daily Telegraph Radio Uganda, monitored in Nairobi.
Radio equipment; spec. a receiving set. E20.
transistor radio: see TRANSISTOR 2.
Edward VIII To speak to you all over the radio.
The radio-frequency part of the electromagnetic spectrum; radio wavelengths. M20.
II. A radio-telegram. Only in E20.
Attrib. & comb.: Esp. in the senses 'pertaining to, participating in, or transmitted as part of organized sound broadcasting', as radio announcer, radio programme, radio script, etc.; 'controlled or operated by radio, employing radio', as radio cab, radio compass, etc.; 'pertaining to or characterized by the emission of radio waves, esp. by celestial objects', as radio buoy, radio galaxy, radio noise, radio observatory, etc. Special combs., as radio amateur a person who makes a hobby of picking up, and often also transmitting, radio messages; radio astronomer a person engaged in radio astronomy; radio astronomy the branch of astronomy that deals with the interpretation of radio waves reaching the earth from space, and with the astronomical use of radio echoes; radio beacon = BEACON noun 4b; radio car: equipped with a two-way radio; radio contact the state or an instance of being in communication by radio; radio-controlled adjective controlled from a distance by means of radio signals; radio energy: transmitted in the form of radio waves; radio fix: see FIX noun 4; radio ham: see HAM noun1 5; radio horizon the line round a radio transmitter at which direct radio waves from it are tangential to the earth's surface; radio licence a licence to use a radio; radio map Astronomy a diagram showing the strength of the radio emission from different parts of the sky; radio net a system of intercommunicating radio sets, operated esp. by a police force or similar body; radio network a system of radio stations for navigation, communication, or broadcasting; a sound broadcasting organization or channel; radio range (a) = radio spectrum below; (b) a radio beacon transmitting directional radio signals which can be used by aircraft to determine the bearing of the transmitter; radio shack a small building or (esp. Nautical) a room housing radio equipment; radio silence deliberate abstention from radio transmission; failure to communicate by radio; radio spectrum the radio-frequency part of the electromagnetic spectrum; the spectrum of any particular source at these frequencies; radio star any discrete source of radio waves outside the solar system (rarely an actual star); radio station an installation or establishment transmitting signals by radio; a sound broadcasting establishment or organization; radio telephone: see TELEPHONE noun 2; radio telescope Astronomy an apparatus or installation for detecting and recording radio waves from the sky, consisting of a large directional aerial together with a receiver and recording equipment; radio wave an electromagnetic wave with a frequency within the range used for telecommunication; usu. in pl.; radio wavelength: corresponding to a radio frequency.
radioless adjective M20.