Nouns

(n)radio, radiocommunication, wirelessmedium for communication
(n)radio receiver, receiving set, radio set, radio, tuner, wirelessan electronic receiver that detects and demodulates and amplifies transmitted signals
(n)radio, wirelessa communication system based on broadcasting electromagnetic waves

Verbs

(v)radiotransmit messages via radio waves“he radioed for help”

Adjectives

(a)radioindicating radiation or radioactivity“radiochemistry”