meltdown
nounDefinition of meltdown
(Entry 1 of 2)
1
: the accidental melting of the core of a nuclear reactor
2
: a rapid or disastrous decline or collapse
3
: a breakdown of self-control (as from fatigue or overstimulation)
melt down
verb
melted down;
melting down;
melts down
Definition of melt down (Entry 2 of 2)
: to suffer a meltdown : collapse
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