radio

Meanings

1. 1
   noun

   A device that receives sound broadcasts such as music and news.

   He turned on the radio to listen to the morning news.

2. 2
   noun

   The system of sending and receiving sound through the air using waves.

   The message was sent by radio to the ship at sea.

3. 3
   verb

   To send a message using a radio.

   The captain radioed for help when the engine failed.

Short for radiotelegraphy.

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