Jisho

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Noun
1. radio
Wikipedia definition
2. RadioRadio is the transmission of signals through free space by electromagnetic waves with frequencies significantly below visible light, in the radio frequency range, from about 3 kHz to 300 GHz. These waves are called radio waves. Electromagnetic radiation travels by means of oscillating electromagnetic fields that pass through the air and the vacuum of space.
Read “Radio” on English Wikipedia
Read “ラジオ” on Japanese Wikipedia
Read “Radio” on DBpedia
Other forms
ラヂオ

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