Armageddon
Concise Oxford English Dictionary © 2008 Oxford University Press:
Armageddon /ˌɑːməˈgɛd(ə)n/
▶noun
- 1 (in the New Testament) the last battle between good and evil before the Day of Judgement.
- 2 a catastrophic conflict.
– origin Gk, from Heb. har mĕgiddōn ‘hill of Megiddo’ (Rev. 16:16).
'Armageddon' also found in these Oxford entries:

