mushroom cloud

noun

Definition of mushroom cloud

:a mushroom-shaped cloud; specifically :one caused by the explosion of a nuclear weapon

Recent Examples of mushroom cloud from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'mushroom cloud.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of mushroom cloud

circa 1909


MUSHROOM CLOUD Defined for English Language Learners

mushroom cloud

noun

Definition of mushroom cloud for English Language Learners

  • : a large cloud that forms after an explosion; especially : a cloud that is caused by the explosion of a nuclear weapon


Learn More about mushroom cloud


Seen and Heard

What made you want to look up mushroom cloud? Please tell us where you read or heard it (including the quote, if possible).

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

to praise usually to excess

Get Word of the Day daily email!

Test Your Vocabulary

Find the Cousins

  • a-large-tree-with-many-branches
  • Which pair shares a common word ancestor?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!