1. noun /ˈɹeɪdiˌəʊ,ˈɹeɪdiˌoʊ/
a) The technology that allows for the transmission of sound or other signals by modulation of electromagnetic waves.
b) A device that can capture (receive) the signal sent over radio waves and render the modulated signal as sound.
See Also: radiate, radiation, radiator, radio documentary, radio drama, radio station, radio transceiver, radius, ray
2. verb /ˈɹeɪdiˌəʊ,ˈɹeɪdiˌoʊ/
a) To use two-way radio to transmit (a message) (to another radio or other radio operator).
I think the boat is sinking; wed better radio for help. / I radioed him already. / Radio the coordinates this time. / OK. I radioed them the coordinates.
b) To order or assist (to a location), using telecommunications.
“Could you call them here? Id like to talk to them. Or if theyre out in the field, radio them in.”
Wikipedia foundation.