I. ra ‧ di ‧ o 1 S1 W2 /ˈreɪdiəʊ $ -dioʊ/ BrE AmE noun
[ Date: 1900-2000 ; Origin: radiotelegraphy (19-21 centuries) , from radio- + telegraphy ]
a) [countable] a piece of electronic equipment which you use to listen to programmes that are broadcast, such as music and news
turn/switch the radio on/off
I sat down and turned on the radio.
b) [uncountable] programmes that are broadcast on the radio:
I don’t really listen to the radio very much.
on the radio
Did you hear the interview with the Prime Minister on the radio this morning?
He’s got his own radio show now.
She works for a local radio station.
a) [countable] a piece of electronic equipment, for example on a plane or ship, which can send and receive spoken messages
over the radio
We received a call for help over the ship’s radio.
b) [uncountable] when messages are sent or received in this way
We should be able to reach them by radio.
We’ve lost radio contact with the plane.
• • •
▪ listen to the radio
She was sitting up in bed, listening to the radio.
▪ hear something on the radio
I heard on the radio that the weather was going to get warmer.
▪ turn/switch the radio on
Dad switched on the radio for the eight-thirty news.
▪ turn/switch the radio off
You can turn the radio off, darling, we're not listening to it.
▪ turn the radio down/up (=make it quieter or louder)
Can you turn your radio down a bit?
▪ tune a radio to a station (=make it receive broadcasts from a particular station)
The radio was tuned to a country-music station.
▪ local radio
Jobs may be advertised in local newspapers or on local radio.
▪ national radio
He even went on national radio to defend himself and his players.
▪ state radio (=controlled by the government of a country)
In a message read on state radio and television, the president called for calm.
■ radio + NOUN
▪ a radio programme/show
It's my favourite radio programme.
▪ a radio station (=an organization that broadcasts radio programmes)
There are currently nearly 50 commercial radio stations.
▪ a radio broadcast
All radio broadcasts continue to be closely monitored by the government.
II. radio 2 BrE AmE verb [intransitive and transitive]
to send a message using a radio
The ship radioed for help.
radio somebody for something
We radioed London for permission to land.