HyperDic: sky_wave

English > 1 sense of the expression sky wave:
NOUNphenomenonsky wavea radio wave that is reflected back to earth by the ionosphere or a communications satellite
English > sky wave: 1 sense > noun 1, phenomenon
MeaningA radio wave that is reflected back to earth by the ionosphere or a communications satellite; permits transmission around the curve of the earth's surface.
Narrowerionospheric waveA sky wave that is reflected by the ionosphere
Broaderradio wave, radio emission, radio radiationAn electromagnetic wave with a wavelength between 0.5 cm to 30,000 m

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