megaton

noun

mega·​ton ˈme-gə-ˌtən How to pronounce megaton (audio)
: an explosive force equivalent to that of one million tons of TNT

Examples of megaton in a Sentence

an atomic explosion with a force of several megatons
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.
Hans Kristensen, director of the Nuclear Information Project at the Federation of American Scientists (FAS), told Newsweek that the DF-5C is possibly a replacement for the existing DF-5A, which also has a single multi-megaton warhead. Brendan Cole, MSNBC Newsweek, 3 Sep. 2025 The explosion yielded an energy equivalent of 10 megatons of TNT, an amount roughly 1,000 times as large as that released by the Hiroshima bomb The other states with nuclear weapons are Britain, China, France, India, Israel and Pakistan. Kurt Snibbe, Oc Register, 6 Aug. 2025 The largest nuclear weapon in the US arsenal has a yield of 1.2 megatons, 80 times greater than the Hiroshima bomb. Brad Lendon, CNN Money, 5 Aug. 2025 Plastic production is on course to triple by 2060, less than 10% of it is recycled, and around 8,000 megatons now pollute the planet, according to a review of recent studies published Sunday by The Lancet. Alexander Smith, NBC news, 4 Aug. 2025 See All Example Sentences for megaton

Word History

First Known Use

1952, in the meaning defined above

Time Traveler
The first known use of megaton was in 1952

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Cite this Entry

“Megaton.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/megaton. Accessed 9 Sep. 2025.

Kids Definition

megaton

noun
mega·​ton ˈmeg-ə-ˌtən How to pronounce megaton (audio)
: an explosive force equal to that of one million tons of TNT

More from Merriam-Webster on megaton

Last Updated: - Updated example sentences
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