radio (radios plural & 3rd person present) (radioing present participle) (radioed past tense & past participle )
1 n-uncount Radio is the broadcasting of programmes for the public to listen to, by sending out signals from a transmitter.
oft N n
The announcement was broadcast on radio and television.
2 n-sing You can refer to the programmes broadcast by radio stations as the radio.
the N
A lot of people tend to listen to the radio in the mornings...
3 n-count A radio is the piece of equipment that you use in order to listen to radio programmes.
He sat down in the armchair and turned on the radio.
4 n-uncount Radio is a system of sending sound over a distance by transmitting electrical signals.
oft N n
They are in twice daily radio contact with the rebel leader.
5 n-count A radio is a piece of equipment that is used for sending and receiving messages.
...the young constable who managed to raise the alarm on his radio...
6 verb If you radio someone, you send a message to them by radio. The officer radioed for advice... V adv/prep A few minutes after take-off, the pilot radioed that a fire had broken out. V that, Also V n, V
digital radio (digital radios plural )
1 n-uncount Digital radio is radio in which the signals are transmitted in digital form and decoded by the radio receiver.
2 n-count A digital radio is a radio that can receive digital signals.
Manufacturers are working on a new generation of cheaper digital radios.
pirate radio (pirate radios plural )Pirate radio is the broadcasting of radio programmes illegally.
(BRIT) n-var
...a pirate radio station.
radio astronomy
Radio astronomy is a branch of science in which radio telescopes are used to receive and analyse radio waves from space. n-uncount
radio cassette (radio cassettes plural )A radio cassette is a radio and a cassette player together in a single machine.
(BRIT) n-count oft N n
...a radio cassette player.
radio-controlled
A radio-controlled device works by receiving radio signals which operate it. adj usu ADJ n
...radio-controlled model planes.
radio telephone (radio telephones plural )A radio telephone is a telephone which carries sound by sending radio signals rather than by using wires. Radio telephones are often used in cars. n-count
radio telescope (radio telescopes plural )A radio telescope is an instrument that receives radio waves from space and finds the position of stars and other objects in space. n-count
