ラジオは英語で
radio

英語の定義

ラジオ
1. n. (from 1924) radio
(synonyms, ja, ダジオ, tr1=dajio, q1=Kagoshima, 無線, tr2=musen, lit2=wireless)
ラジオを聞く - listen to the radio
2. n. (from 1952) (slang dated) broke, having no money; dining and dashing q, punning off of 無線 with the sense of 無銭
(synonyms, ja, 無銭, tr1=musen, q1=no money, 無銭飲食, tr2=musen inshoku, q2=dining and dashing)
3. n. radiation (q, when used as part of a compound)
(synonyms, ja, 放射, tr1=hōsha)
ラジオアイソトープ - radioisotope

radio
1. n. The technology that allows for the transmission of sound or other signals by modulation of electromagnetic waves.
2. n. A device that can capture (receive) the signal sent over radio waves and render the modulated signal as sound.
3. n. On-board entertainment system in a car, usually including a radio receiver as well as the capability to play audio from recorded media.
4. n. A device that can transmit radio signals.
5. n. (Internet) The continuous broadcasting of sound recordings via the Internet in the style of traditional radio.
6. v. To use two-way radio to transmit (a message) (to another radio or other radio operator).
I think the boat is sinking; we'd better radio for help. / I radioed him already. / Radio the coordinates this time. / OK. I radioed them the coordinates.
7. v. To order or assist (to a location), using telecommunications.