short·wave (shôrt w v)adj. 1. Having a wavelength of approximately 10 to 200 meters. 2. Capable of receiving or transmitting at wavelengths of approximately 10 to 200 meters: a shortwave radio. |
| shortwave (shôrtwv) A radio wave with a frequency between 5.9 megahertz and 26.1 megahertz. Shortwaves broadcast from the Earth's surface are reflected by the upper atmosphere and can travel great distances around the planet. The shortwave band of the electromagnetic spectrum is used for amateur radio communications. |
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