Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “mushroom cloud”

See all translations

mushroom cloud

noun [C usually singular] uk   us  
a very large cloud of dust that rises into the air in the shape of a large mushroom, especially after a nuclear explosion: The mushroom cloud over Hiroshima is a horrific image of war.
Translations of “mushroom cloud”
in Chinese (Traditional) (尤指核爆炸後形成的)蘑菇雲…
in Chinese (Simplified) (尤指核爆炸后形成的)蘑菇云…
(Definition of mushroom cloud from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of mushroom cloud?
Add Cambridge dictionaries to your browser to your website

Word of the Day

bad/hard/tough luck

said to express sympathy with someone when something bad has happened to them

Word of the Day

Think long and hard; the language of decisions

by Liz Walter,
January 28, 2015
One of the best ways (perhaps the best way) to improve your English is to learn how words go together in phrases, idioms, or other patterns such as verb/noun or adjective/noun pairs (often called ‘collocations’). This blog looks at some useful phrases and collocations connected with the subject of decisions, something we

Read More 

micro pig noun

January 26, 2015
an extremely small pig, bred to be a pet Micro pigs have become popular pets recently, with famous owners including Victoria Beckham, Paris Hilton and Olympic diver, Tom Daley.

Read More