meltdown

Noun
  1. Severe overheating of the core of a nuclear reactor resulting in the core melting and radiation escaping (synset 113534565)
    is a type of: overheating - excessive heating
    same as: nuclear meltdown
  2. A disaster comparable to a nuclear meltdown (synset 107331003)
    "there is little likelihood of a meltdown comparable to the American banking collapse in March 1933"
    is a type of: calamity, cataclysm, catastrophe, disaster, tragedy - an event resulting in great loss and misfortune

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