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Synonyms

mushroom cloud

American  

noun

  1. mushroom.

mushroom cloud British  

noun

  1. the large mushroom-shaped cloud of dust, debris, etc produced by a nuclear explosion

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of mushroom cloud

First recorded in 1940–45

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Harry Truman’s legacy froze the moment the mushroom cloud rose over Hiroshima.

From The Wall Street Journal • Jan. 16, 2026

Federal investigators later concluded that the open burn and the black mushroom cloud it produced were unnecessary, but it was too late.

From Salon • Oct. 5, 2024

And just as nuclear blasts produce a distinctive mushroom cloud, uncontrolled wildfires can be powerful enough to generate their own weather.

From Los Angeles Times • Sep. 22, 2024

Some images showed Margot Robbie with a mushroom cloud hairstyle.

From BBC • Aug. 1, 2023

He accidentally knocked a tray of chemicals off the counter and made an Orange mushroom cloud in the trash can.

From "The Sea of Monsters" by Rick Riordan

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.