- 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.
- shortwave radio.
- Physics. a wave of electromagnetic radiation equal in length to, or shorter than, the wavelength of visible light.
- of, relating to, or using shortwaves.
- to transmit by shortwaves.
Origin of shortwave
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for short-wave
There were taxi fleets to be equipped with short-wave radio.
There was no movement ashore, though Nick had talked with the island on short-wave.
Nick abandoned his job and went below to the short-wave set.
It wasn't a scientific guy talking, just the short-wave operator.
If they were keeping in touch with some of their own people by short-wave—of course they would speak English!Sign of the Green Arrow
Roy J. (Roy Judson) Snell
Word Origin and History for short-wave
Online Etymology Dictionary, © 2010 Douglas Harper
- 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 © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.