WordReference Random House Unabridged Dictionary of American English © 2025
E region, 
  1. Meteorology, Physicsthe region of the ionosphere in which the E layer forms.
  • 1935–40

Collins Concise English Dictionary © HarperCollins Publishers::
E region, E layer
  1. a region of the ionosphere, extending from a height of 90 to about 150 kilometres. It reflects radio waves of medium wavelength
    See also ionosphere
'E region' also found in these entries (note: many are not synonyms or translations):
E layer - Heaviside layer - Kennelly - ionosphere

Forum discussions with the word(s) "E region" in the title:


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