1
: the focus of an earthquake compare epicenter sense 1
2
: the point on the earth's surface directly below the center of a nuclear bomb explosion

Examples of hypocenter in a Sentence

Recent Examples on the Web
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The schoolchildren of Minab had been close to mind in part because of my strong and difficult memories of touring the still-operational Shiroyama Elementary School in Nagasaki, which had been five hundred meters from the hypocenter. Christopher Hooks, Harpers Magazine, 23 June 2026 That underground starting point is known as the hypocenter or focus. Gabe Whisnant, MSNBC Newsweek, 3 Dec. 2025 At the speed of light, a trillion of them passed through those near the bomb’s hypocenter. R. Daniel Foster, Forbes.com, 27 Aug. 2025 This created a fireball that bathed everything within about a two kilometer radius of the hypocenter in about 3–4,000℃ heat. Kevin Dickinson, Big Think, 20 Aug. 2025 See All Example Sentences for hypocenter

Word History

First Known Use

1905, in the meaning defined at sense 1

Time Traveler
The first known use of hypocenter was in 1905

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Cite this Entry

“Hypocenter.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hypocenter. Accessed 16 Jul. 2026.

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