n. also short wave 1. Abbr. sw An electromagnetic wave with a wavelength of approximately 200 meters or less, especially a radio wave in the 10 to 200 meter range. 2. See shortwave radio. adj. also short-wave 1. Having a wavelength of approximately 10 to 200 meters. 2. Capable of receiving or transmitting at wavelengths of approximately 10 to 200 meters. |
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