noun, masculine/apokaˈlibsis/plural: apocalipsis
apocalypse (end of the world); apocalypse (cataclysmic event)
“un apocalipsis nuclear” — a nuclear apocalypse
Synonyms: calamidad, cataclismo, catástrofe, desastre, hecatombe
Learned borrowing from Late Latin apocalypsis, from Ancient Greek ᾰ̓ποκᾰ́λῠψις (ăpokắlŭpsis, “revelation”).