Armageddon /(är*mȧ"jĕ"d'n)/

Ar·ma·ged·don

Armageddon

n.
  1. the final, decisive battle between the forces of good and evil, as foretold in the Apocolypse of Saint John. Also, the site of that battle. Used metaphorically for a vast and decisive conflict, attended by cataclysmic destruction.