Armageddon, battlefield described in the Bible in Revelation 16:16 as the scene of the predicted final struggle between good and evil. The name may be taken from that of the battlefield Megiddo (see Judges 5:19) in the Plain of Esdraelon, which was well known because of the many battles that were fought there between the Israelites and their enemies during the biblical period. Hence, the term has been applied to any great conflict or slaughter.