Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “meltdown”

See all translations

meltdown

noun [C or U] uk   /ˈmelt.daʊn/ us  

meltdown noun [C or U] (NUCLEAR)

an extremely dangerous situation in a nuclear power station in which the nuclear fuel becomes very hot and melts through its container and escapes into the environment

meltdown noun [C or U] (FAILURE)

a complete failure, especially in financial matters: financial/economic/market meltdown The last few months have seen the progressive meltdown of the country's political system. informal an occasion when a person becomes extremely upset and is not able to deal with a problem or situation
(Definition of meltdown from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of meltdown?
Add Cambridge dictionaries to your browser to your website

Definitions of “meltdown” in other dictionaries

Word of the Day

limber up

to do gentle exercises to stretch the muscles in order to prepare the body for more active physical exercise

Word of the Day

Byronic, Orwellian and Darwinian: adjectives from names.

by Liz Walter,
April 15, 2015
Becoming an adjective is a strange kind of memorial, but it is often a sign of a person having had real influence on the world. Science is full of examples, from Hippocrates, the Greek medic born around 460 BC, who gave his name to the Hippocratic Oath still used by doctors today,

Read More 

bio-inspiration noun

April 13, 2015
the adoption of patterns and structures found in nature for the purposes of engineering, manufacturing, science, etc. The MIT researchers actually aren’t the only robotics team to turn to cheetahs for bio-inspiration.

Read More