- a unit of one million deaths: used in estimating or predicting the fatalities that would occur in a nuclear war.
Origin of megadeath
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- the death of a million people, esp in a nuclear war or attack
Word Origin and History for megadeath
Online Etymology Dictionary, © 2010 Douglas Harper