apocalypse Meaning, Definition & Usage

  1. noun a cosmic cataclysm in which God destroys the ruling powers of evil
  2. noun the last book of the New Testament; contains visionary descriptions of heaven and of conflicts between good and evil and of the end of the world; attributed to Saint John the Apostle
    Revelation; Revelation of Saint John the Divine; Book of Revelation.

WordNet

A*poc"a*lypse noun
Etymology
L. apocalypsis, Gr. , fr. to uncover, to disclose; from + to cover, conceal: cf. F. apocalypse.
Definitions
  1. The revelation delivered to St. John, in the isle of Patmos, near the close of the first century, forming the last book of the New Testament.
  2. Anything viewed as a revelation; as disclosure.
    The new apocalypse of Nature. Carlyle.

Webster 1913