A lot vs. Alot: 9 Grammatical Pitfalls
"a final conflict," 1811, figurative use of name in Rev. xvi:16, place of the great and final conflict, from Hebrew Har Megiddon "Mount of Megiddo," city in central Palestine, site of important Israeli battles.
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.”
Note: Figuratively, “Armageddon” is any great battle or destructive confrontation.
occurs only in Rev. 16:16 (R.V., "Har-Magedon"), as symbolically designating the place where the "battle of that great day of God Almighty" (ver. 14) shall be fought. The word properly means the "mount of Megiddo." It is the scene of the final conflict between Christ and Antichrist. The idea of such a scene was suggested by the Old Testament great battle-field, the plain of Esdraelon (q.v.).