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E layer

noun
1.
the radio-reflective ionospheric layer of maximum electron density, normally found at an altitude between 60 and 75 miles (100 and 120 km).
Origin
1930-1935
1930-35
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for E layer

E layer

noun
1.
another name for E region

E region

noun
1.
a region of the ionosphere, extending from a height of 90 to about 150 kilometres. It reflects radio waves of medium wavelength Also called Heaviside layer, Kennelly-Heaviside layer See also ionosphere
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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E layer in Science
E layer  
See E region.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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