time bomb
Americannoun
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a bomb constructed so as to explode at a certain time.
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a situation, condition, etc., resembling such a bomb in having disastrous consequences in the future.
noun
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a bomb containing a timing mechanism that determines the time at which it will detonate
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a situation which, if allowed to continue, will develop into a serious problem
Etymology
Origin of time bomb
First recorded in 1890–95
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.