|Origin:||apocalypsis, from Greek, from apokalyptein 'to uncover', from apo- 'away from, off' + kalyptein 'to cover'|
the destruction and end of the world:
anti-nuclear protestors who fear the apocalypse
a situation in which a lot of people die or suffer, and a lot of damage is done:
A lot of investors now fear a stock market apocalypse.