Definition of meltdown in English:


Syllabification: melt·down
Pronunciation: /ˈmeltˌdoun


1A disastrous event, especially a rapid fall in share prices: the 1987 stock market meltdown
More example sentences
  • It's been a long time since I've had a major meltdown, and this time it was just about a puppy.
  • Perhaps the most critical lesson learned from last year, however, is the heavy price corporate reputations pay for such meltdowns.
  • While no one expects hedge-fund values to be listed in the daily newspapers, everyone would be relieved if fewer meltdowns appeared in the headlines.
1.1 informal An outburst of severe emotional distress; a nervous breakdown: they wondered what could have triggered her meltdown
More example sentences
  • Megan still has meltdowns, or tantrums, because she finds it very difficult to communicate.
  • Computer geeks are extremely unlikely to suffer one of those spectacular emotional meltdowns that make for good television.
  • Margo's spectacular meltdown at a dinner party is so effective because there are barbs of truth sprinkled in with the vain wailing and gnashing of teeth.
2An accident in a nuclear reactor in which the fuel overheats and melts the reactor core or shielding.
More example sentences
  • I was 21 years old and it was three days after the partial meltdown of the reactor core.
  • Some nuclear critics had asserted that a core meltdown would inevitably breach containment.
  • A year ago one of the company's nuclear plants came dangerously close to a core meltdown.

Definition of meltdown in: