adj.1. Relating to or predicting the end of the world, especially as described in the Bible or another religious text.
2. Relating to or predicting widespread destruction or the collapse of civilization: "The refugees in the camps spoke of apocalyptic devastation and tens of thousands dead" (Amitav Ghosh).
3. Characterized by predictions of or allusions to a disastrous outcome: spoke of the impending economic crisis in apocalyptic terms.