from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A region of the ionosphere, extending from about 90 to 150 kilometers (55 to 95 miles) above the earth and influencing long-distance communications by strongly reflecting radio waves in the range from one to three megahertz. Also called E region, Heaviside layer, Kennelly-Heaviside layer.


Sorry, no etymologies found.


  • Interplay video file (*. mve); M3 = Multiselect existing files. if MVE_files = return

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