Radiophonic refers to something that is related to sound broadcasting or radiotelephony. Synonyms for radiophonic include radio, wireless, broadcast, radiotelegraphy, and radiotelephone. These words all imply the transmission of sound via radio waves. Other synonyms for radiophonic include digital radio, HD radio, and internet radio. These terms describe the various methods of transmitting radio signals in today's digital age. Overall, the word radiophonic and its synonyms are important in the world of communications and broadcasting, and they allow people all over the world to access information and entertainment through the airwaves.