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E layer

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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).
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Origin of E layer

First recorded in 1930–35
Also called Heaviside layer, Kennelly-Heaviside layer.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for e layer

E layer

noun
  1. another name for E region
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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
e layer in Science

E layer

  1. See E region.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.