hydrogen bomb

noun

: a bomb whose violent explosive power is due to the sudden release of atomic energy resulting from the fusion of light nuclei (as of hydrogen atoms) at very high temperature and pressure to form helium nuclei

Examples of hydrogen bomb in a Sentence

Recent Examples on the Web
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In 1968: France became the world’s fifth thermonuclear power, exploding a hydrogen bomb in a test on French Polynesia. Daily Briefing, AZCentral.com, 25 Aug. 2025 In 1951 Garwin designed the hydrogen bomb, applying theoretical work by physicists Edward Teller and Stanislaw Ulam. Amanda Davis, IEEE Spectrum, 12 Aug. 2025 The circles above show the blast radius of the Hiroshima atomic bomb compared with a modern hydrogen bomb. Kurt Snibbe, Oc Register, 6 Aug. 2025 The Soviet demonstration of an atomic bomb in 1949 had galvanized calls for a bigger bomb, a hydrogen bomb, in the U.S., sparking the paranoia today best remembered for claiming the career of Manhattan Project chief J. Robert Oppenheimer. Dan Vergano, Scientific American, 1 Aug. 2025 See All Example Sentences for hydrogen bomb

Word History

First Known Use

1947, in the meaning defined above

Time Traveler
The first known use of hydrogen bomb was in 1947

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Cite this Entry

“Hydrogen bomb.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hydrogen%20bomb. Accessed 11 Sep. 2025.

Kids Definition

hydrogen bomb

noun
: a bomb whose violent explosive power is due to the sudden release of atomic energy when hydrogen nuclei unite

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