shortwave

[shawrt-weyv]
noun
1.
Electricity. a radio wave, shorter than that used in AM broadcasting, corresponding to frequencies of over 1600 kilohertz: used for long-distance reception or transmission.
3.
Physics. a wave of electromagnetic radiation equal in length to, or shorter than, the wavelength of visible light.
adjective
4.
of, pertaining to, or using shortwaves.
verb (used with object), verb (used without object), shortwaved, shortwaving.
5.
to transmit by shortwaves.

Origin:
1900–05; short + wave

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Based on the Random House Dictionary, © Random House, Inc. 2014.
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American Heritage
Science Dictionary
shortwave   (shôrt'wāv')  Pronunciation Key 
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.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences
And he has promised, via shortwave radio, to show me what oil is doing to his people.
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