meltdown

1 of 2

noun

melt·​down ˈmelt-ˌdau̇n How to pronounce meltdown (audio)
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

2 of 2

verb

melted down; melting down; melts down

intransitive verb

: to suffer a meltdown : collapse

Examples of meltdown in a Sentence

Noun fears that an accident could cause meltdown a company experiencing financial meltdown After a long day at the beach, our toddler had a major meltdown in the car on the way home. Verb rather than melt down, the team strengthened their resolve and ended up winning the game
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Noun
Among the historic market meltdowns during these months were two in September—1998’s collapse of Long-Term Capital Management and 2008’s Lehman Brothers bankruptcy—and two in October—1987’s Black Monday stock market crash and 1997’s Asian financial crisis. Nick Lichtenberg, Fortune, 10 Aug. 2025 The eighth-inning meltdown spoiled the Angels’ good work against Skubal, who came into the game with a 2.18 ERA. Jeff Fletcher, Oc Register, 8 Aug. 2025
Verb
The Guard in 1992 arrived in a city that had melted down: More than 60 people died, 1,000 buildings burned and unrest stretched from City Hall to Hollywood, with whole swaths of South Los Angeles torn to shreds. Jim Newton, Mercury News, 12 July 2025 But the freedom only goes so far — the robot must hide its true nature, lest it get melted down like so much scrap metal. Omar L. Gallaga, Los Angeles Times, 11 July 2025 See All Example Sentences for meltdown

Word History

First Known Use

Noun

1956, in the meaning defined at sense 1

Verb

1956, in the meaning defined above

Time Traveler
The first known use of meltdown was in 1956

Browse Nearby Words

See all Nearby Words

Cite this Entry

“Meltdown.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/meltdown. Accessed 21 Aug. 2025.

Kids Definition

meltdown

noun
melt·​down ˈmelt-ˌdau̇n How to pronounce meltdown (audio)
1
: the accidental melting of the core of a nuclear reactor
2
: a rapid or disastrous decline or collapse
a financial meltdown
3
: a breakdown of self-control (as from fatigue or overstimulation)

More from Merriam-Webster on meltdown

Last Updated: - Updated example sentences
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