Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “fallout”

fallout

noun [U]  /ˈfɔlˌɑʊt/ us  

fallout noun [U] (EFFECT)

the unpleasant results or effects of an action or event: He blamed the political fallout from the scandal on the Republicans.

fallout noun [U] (DUST)

the radioactive dust in the air after a nuclear device explodes
(Definition of fallout from the Cambridge Academic Content Dictionary © Cambridge University Press)
What is the pronunciation of fallout?
Add Cambridge dictionaries to your browser to your website

Definitions of “fallout” in other dictionaries

Word of the Day

flair

natural ability to do something well

Word of the Day

Blog

Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More