radio

1 radio /ˈreɪdiˌoʊ/ noun
plural radios
1 radio
/ˈreɪdiˌoʊ/
noun
plural radios
Britannica Dictionary definition of RADIO
1 
[noncount] : the system or process that is used for sending and receiving signals through the air without using wires — often used before another noun
2 
[noncount] : programs that are broadcast by radio
— often used before another noun — see also talk radio
3 
[count]
a  : a device that is used to receive the signals that are broadcast by radio
b  : a device that is used to send and receive messages by radio
4 
[noncount] : the business that makes and broadcasts radio programs
2 radio /ˈreɪdiˌoʊ/ verb
radios; radioed; radioing
2 radio
/ˈreɪdiˌoʊ/
verb
radios; radioed; radioing
Britannica Dictionary definition of RADIO
: to send a message to someone by radio
[no object]
[+ object]