I. ra‧di‧o¹ S1 W2 /ˈreɪdiəʊ $ -dioʊ/ noun
[Date: 1900-2000; Origin: radiotelegraphy (19-21 centuries), from radio- + telegraphy]

1.
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?
radio programme/show
He’s got his own radio show now.
local/national radio
She works for a local radio station.

2.
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
by radio
We should be able to reach them by radio.
We’ve lost radio contact with the plane.

[TahlilGaran] Dictionary of Contemporary English ▲

II. radio² verb [intransitive and transitive]
to send a message using a radio
radio for
The ship radioed for help.
radio somebody for something
We radioed London for permission to land.

[TahlilGaran] Dictionary of Contemporary English ▲

Radio 1 /ˌreɪdiəʊ ˈwʌn/
a BBC radio station which broadcasts mostly pop³ music and is listened to mostly by young people

[TahlilGaran] Dictionary of Contemporary English ▲

Radio 2 /ˌreɪdiəʊ ˈtuː/
a BBC radio station which broadcasts popular music and entertainment programmes. Unlike Radio 1, Radio 2 does not play the most recent music, and it is listened to especially by older people.

[TahlilGaran] Dictionary of Contemporary English ▲

Radio 3 /ˌreɪdiəʊ ˈθriː/
a BBC radio station which broadcasts mostly classical music

[TahlilGaran] Dictionary of Contemporary English ▲

Radio 4 /ˌreɪdiəʊ ˈfɔːʳ/
a BBC radio station which broadcasts programmes on news and politics, as well as plays and arts programmes. Radio 4 is thought of as a serious radio station which is listened to by all types of people.

[TahlilGaran] Dictionary of Contemporary English ▲

radio- /reɪdiəʊ $ -dioʊ/ prefix
[Language: French; Origin: Latin radius; ⇒ radius]
technical using radio waves:
radiopaging (=calling people by radio)

[TahlilGaran] Dictionary of Contemporary English ▲

radio
noun
ADJ. cab, car There were calls for cab radios to link train drivers and signal boxes.
CB, mobile, portable, transistor, two-way | FM, long-wave, short-wave | army, police | community, local, national, state
VERB + RADIO listen to | turn on, tune in to | tune His radio is permanently tuned to Radio 1.
turn down/up
RADIO + VERB announce sth, report sth The radio announced that the president had been assassinated.
blare (out), play (sth) He drove along with his windows open and the radio blaring out.
RADIO + NOUN receiver, set | alarm, cassette (player) | message, signal, waves | operator | system | transmitter | silence The troops maintained a strict radio silence while they moved into position.
station | advertisement, broadcast, interview, news, programme, report, show, transmission | frequency | amateur, ham The distress call was picked up by a young radio ham.
drama, play
PREP. by ~ The message was sent by radio.
on the ~ We were listening to a show on the radio.

[TahlilGaran] Collocations Dictionary ▲

radio

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.
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.

[TahlilGaran] Collocations Dictionary ▲

radio
noun
BAD: I always listen to the news in the radio.
GOOD: I always listen to the news on the radio.
BAD: On radio there was a current affairs programme.
GOOD: On the radio there was a current affairs programme.

Usage Note:
On the radio, on (the) television (NOT in ): 'It's strange to hear your own voice on the radio.' 'What's on television tonight?'

[TahlilGaran] Dictionary of Common Errors ▲