1

radio

play
adjective ra·dio \ˈrā-dē-ˌō\

Definition of radio

  1. 1 :  of, relating to, or operated by radiant energy

  2. 2 :  of or relating to electric currents or phenomena (as electromagnetic radiation) of frequencies between about 3000 hertz and 300 gigahertz

  3. 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-


First Known Use: 1887

Other Telecommunications Terms


2

radio

noun ra·dio

Definition of radio

plural

radios

  1. 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. 2 :  a radio message

  3. 3 :  a radio receiving set

  4. 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.

Origin and Etymology of radio

short for radiotelegraphy


First Known Use: 1903

Other Telecommunications Terms


3

radio

verb ra·dio

Definition of radio

  1. transitive verb
  2. 1 :  to send or communicate by radio

  3. 2 :  to send a radio message to

  4. intransitive verb
  5. :  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.

1913

First Known Use of radio

1913

Other Telecommunications Terms


radio-

ra·dio

Definition of radio-

  1. see radi-



RADIO Defined for English Language Learners


2

radio

noun ra·dio

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


3

radio

verb ra·dio

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. 1 :  the process that is used for sending or receiving signals by means of electromagnetic waves without a connecting wire

  2. 2 :  a device that receives signals sent by radio

  3. 3 :  programs that are broadcast by radio

  4. 4 :  a device used to both send and receive messages by radio

  5. 5 :  the radio broadcasting industry


2

radio

play
adjective ra·dio

Definition of radio for Students

  1. 1 :  of or relating to radio waves

  2. 2 :  of, relating to, or used in radio broadcasting


3

radio

play
verb ra·dio

Definition of radio for Students

radioed

radioing

  1. :  to communicate or send a message to by radio


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