Apocalypticism Definition
ə-pŏkə-lĭptĭ-sĭzəm
noun
Belief in apocalyptic prophecies, especially regarding the imminent destruction of the world and the foundation of a new world order as a result of the triumph of good over evil.
American Heritage
The belief that the world will end, esp. soon, in a series of events foretold in prophecy and marked by special signs and omens.
Webster's New World
Alternative capitalization of apocalypticism.
Wiktionary