What does apocalypse mean?
The definition of apocalypse
A*poc”a*lypse, n.
Etym: [L. apocalypsis, Gr. apocalypse.]

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.