Synonyms of meltdown

Noun

1. meltdown, nuclear meltdown, overheating

usage: severe overheating of the core of a nuclear reactor resulting in the core melting and radiation escaping

2. meltdown, calamity, catastrophe, disaster, tragedy, cataclysm

usage: a disaster comparable to a nuclear meltdown; "there is little likelihood of a meltdown comparable to the American banking collapse in March 1933"

Definition and meaning of meltdown (Dictionary)