radio

noun

1. (uncountable)The technology that allows for the transmission of sound or other signals by modulation of electromagnetic waves.

   “send a message by radio”

2. (countable)A device that can capture (receive) the signal sent over radio waves and render the modulated signal as sound.

   “(of a song, person, etc.) to be on the radio”

   “(of a song, etc.) to play on/be played on/get played on/come on the radio”

   “to hear/listen to a song on the radio”

   “We heard a lovely song on the radio.”

   “She was listening to the radio when he knocked on the door.”

3. (broadly, countable)A device that can capture (receive) the signal sent over radio waves and render the modulated signal as sound.
4. (countable)A device that can transmit radio signals.
5. (Internet, uncountable)The continuous broadcasting of sound via the Internet in the style of traditional radio.

verb

1. (ambitransitive)To use two-way radio to transmit (a message) (to another radio or other radio operator).

   “I think the boat is sinking; we'd better radio for help. / I radioed him already. / Radio the coordinates this time. / OK. I radioed them the coordinates.”

2. (transitive)To order or assist (to a location), using telecommunications.

   ““Could you call them here? I'd like to talk to them. Or if they're out in the field, radio them in.””

   “When I told him that they weren't back yet, he asked if we could radio them back early […] Radioing them in was fine with me.”

   “When she arrived, she was told that Tad wasn't there and to have a seat and wait while they radioed him in.”

name

1. A surname.