electromagnetic wave

noun Physics.
a wave produced by the acceleration of an electric charge and propagated by the periodic variation of intensities of, usually, perpendicular electric and magnetic fields.
Also called electric wave.


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World English Dictionary
electromagnetic wave
See also electromagnetic radiation a wave of energy propagated in an electromagnetic field

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Science Dictionary
electromagnetic wave  
A wave of energy consisting of electric and magnetic fields, oscillating at right angles to each other. See more at electromagnetic radiation.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences
In other words, there would be no electromagnetic wave, and thus no light.
Light is traditionally explained as an electromagnetic wave with a frequency or
  wavelength that makes it visible to the human eye.
After all, a static magnetic field is merely an electromagnetic wave with a
  frequency of zero.
The properties of these electrons dictate, whether a certain kind of incoming
  electromagnetic wave will go through or will not.
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