radiotelephony
/ˌreɪdioʊtəˈlɛfəni/
noun
- A system of communication that uses radio waves to transmit speech, rather than wires or cables.
- Pilots use radiotelephony to talk to air traffic control during flights.
- Early radiotelephony allowed ships at sea to call for help when they were far from land.
- The invention of radiotelephony made it possible for people in remote areas to communicate instantly.