Ken·nel·ly-Heav·i·side layer (k?n??-l?-h?v??-s?d?)n. See E layer.[After Edwin Kennelly (1861-1939), American physicist, and Oliver, Heaviside (1850-1925), British physicist.]American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.Kennelly-Heaviside layer n (General Physics) See E region Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014