HyperDic: long_wave

English > 1 sense of the expression long wave:
NOUNphenomenonlong wavea radio wave with a wavelength longer than a kilometer (a frequency below 300 kilohertz)
English > long wave: 1 sense > noun 1, phenomenon
MeaningA radio wave with a wavelength longer than a kilometer (a frequency below 300 kilohertz).
Broaderradio wave, radio emission, radio radiationAn electromagnetic wave with a wavelength between 0.5 cm to 30,000 m

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