Armageddon

[ ahr-muh-ged-n ]
/ ˌɑr məˈgɛd n /

noun

the place where the final battle will be fought between the forces of good and evil (probably so called in reference to the battlefield of Megiddo. Rev. 16:16).
the last and completely destructive battle: The arms race can lead to Armageddon.
any great and crucial conflict.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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British Dictionary definitions for armageddon

Armageddon
/ (ˌɑːməˈɡɛdən) /

noun

New Testament the final battle at the end of the world between the forces of good and evil, God against the kings of the earth (Revelation 16:16)
a catastrophic and extremely destructive conflict, esp World War I viewed as this

Word Origin for Armageddon

C19: from Late Latin Armagedōn, from Greek, from Hebrew har megiddōn, mountain district of Megiddo, in N Palestine, site of various battles in the Old Testament
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

Culture definitions for armageddon

Armageddon
[ (ahr-muh-ged-n) ]

In the Book of Revelation, the site of the final and conclusive battle between good and evil, involving “the kings of the Earth and the whole world,” on the “great day of God Almighty.”

notes for Armageddon

Figuratively, “Armageddon” is any great battle or destructive confrontation.
The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.