ground zero

noun

1
: the point directly above, below, or at which a nuclear explosion occurs
2
: the center or origin of rapid, intense, or violent activity or change
broadly : center sense 2a
the party town that served as ground zero for those corporate … bashes Rich Eisen
3
: the very beginning : square one

Examples of ground zero in a Sentence

ground zero in the battle over immigration laws a city that was once ground zero for the insurance industry
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Ochota Barrels The Price of Silence Gamay, Adelaide Hills, South Australia, $60 Adelaide Hills was ground zero for the country’s natural wine movement, home to a plethora of creative small-batch producers like winemaker Taras Ochota, who led the charge. Christina Pickard, Bon Appétit, 5 Mar. 2025 It’s been ground zero for the phenomenon for decades. Graham Averill, Outside Online, 3 Mar. 2025 Trump’s current border czar Tom Homan has designated Chicago ground zero for his mass deportation plans, singling out Johnson and Gov. JB Pritzker. Alice Yin, Chicago Tribune, 5 Feb. 2025 Zouk was ground zero for Los Angeles nightlife last weekend. Chris Gardner, The Hollywood Reporter, 18 Mar. 2025 See All Example Sentences for ground zero

Word History

First Known Use

1946, in the meaning defined at sense 1

Time Traveler
The first known use of ground zero was in 1946

Browse Nearby Words

Cite this Entry

“Ground zero.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ground%20zero. Accessed 16 Apr. 2025.

Kids Definition

ground zero

noun
1
: the site of a nuclear explosion
2
: the center of rapid, intense, or violent activity or change
3
: the very beginning : square one

More from Merriam-Webster on ground zero

Last Updated: - Updated example sentences
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