1

radio

play
adjective ra·dio \ ˈrā-dē-ˌō \

Definition of radio

1 :of, relating to, or operated by radiant energy
2 :of or relating to electric currents or phenomena (such as electromagnetic radiation) of frequencies between about 3000 hertz and 300 gigahertz
3 a :of, relating to, or used in radio or a radio set
b :specializing in radio or associated with the radio industry
c (1) :transmitted by radio
(2) :making or participating in radio broadcasts
d :controlled or directed by radio

Origin and Etymology of radio

2radio or radio-

Other Telecommunications Terms


2

radio

noun

Definition of radio

plural radios
1 a :the wireless transmission and reception of electric impulses or signals by means of electromagnetic waves
b :the use of these waves for the wireless transmission of electric impulses into which sound is converted
2 :a radio message
3 :a radio receiving set
4 a :a radio transmitting station
b :a radio broadcasting organization
c :the radio broadcasting industry
d :communication by radio

Examples of radio in a Sentence

  1. The news was sent by radio.

  2. I listen to the radio all the time.

  3. I heard the news on the radio.

  4. There's a problem with the car's radio.

  5. The radio was playing very loudly.

  6. The pilot's radio wasn't working.

Recent Examples of radio from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'radio.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Origin and Etymology of radio

short for radiotelegraphy

Other Telecommunications Terms


3

radio

verb

Definition of radio

transitive verb
1 :to send or communicate by radio
2 :to send a radio message to
intransitive verb
:to send or communicate something by radio

Examples of radio in a Sentence

  1. The police radioed for backup.

  2. The stranded sailors were radioing for help.

  3. The pilot radioed in to the control tower.

  4. The police radioed a report back to the station.

  5. They radioed the Coast Guard for help.

Recent Examples of radio from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'radio.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of radio

1913

Other Telecommunications Terms


radio-

Definition of radio-

— see radi-


RADIO Defined for English Language Learners

radio

noun

Definition of radio for English Language Learners

  • : the system or process that is used for sending and receiving signals through the air without using wires

  • : programs that are broadcast by radio

  • : a device that is used to receive the signals that are broadcast by radio


radio

verb

Definition of radio for English Language Learners

  • : to send a message to someone by radio


RADIO Defined for Kids

1

radio

play
noun ra·dio \ ˈrā-dē-ˌō \

Definition of radio for Students

plural radios
1 :the process that is used for sending or receiving signals by means of electromagnetic waves without a connecting wire
2 :a device that receives signals sent by radio
3 :programs that are broadcast by radio
4 :a device used to both send and receive messages by radio
5 :the radio broadcasting industry

2

radio

adjective

Definition of radio for Students

1 :of or relating to radio waves
2 :of, relating to, or used in radio broadcasting

3

radio

verb

Definition of radio for Students

radioed; radioing
:to communicate or send a message to by radio


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