e-bomb (??-b?m?)n. A bomb that generates a strong electromagnetic pulse in the microwave frequency range, used to destroy or disrupt electronic equipment. Also called electromagnetic bomb, microwave bomb.[e(lectromagnetic) + bomb.]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.e-bombAn unusually damaging computer virus.Dictionary of Unfamiliar Words by Diagram Group Copyright © 2008 by Diagram Visual Information Limited