[ meg-uh-deth ]
/ ˈmɛg əˌdɛθ /
a unit of one million deaths: used in estimating or predicting the fatalities that would occur in a nuclear war.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for megadeath
/ (ˈmɛɡəˌdɛθ) /
the death of a million people, esp in a nuclear war or attack
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
Word Origin and History for megadeath
1953, from mega- in scientific sense (one million) + death (n.). The death of one million persons, as a measure of the effectiveness of nuclear weapons. The resulting pile of dead bodies would be a megacorpse, according to writings on the topic.
Online Etymology Dictionary, © 2010 Douglas Harper