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Definition meltdown in American English

meltdown noun

[countable/uncountable] noun
/ˈmeltˌdaʊn/
1

an accident in a nuclear reactor in which the temperature increases in the nuclear fuel until it melts and bursts through its container so that radiation comes out

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2

a sudden and complete failure of a company, organization, or system

Example

fear of a global financial meltdown

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Definition meltdown in American English