Definition of "radio"
radio
/ˈɹeɪdiˌəʊ/
noun
countable and uncountable, plural radios
(uncountable) The technology that allows for the transmission of sound or other signals by modulation of electromagnetic waves.
(Internet, uncountable) The continuous broadcasting of sound via the Internet in the style of traditional radio.
verb
third-person singular simple present radios, present participle radioing, simple past and past participle radioed