hydrogen bomb

noun

Definition of hydrogen bomb 

: 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

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Meanwhile, the freeze on new material — including tritium, an element necessary for the North to make advanced atom bombs as well as the far more powerful hydrogen bombs — would mean that the program would slowly decay. David E. Sanger, New York Times, "As Bolton Says North Korea Could Disarm in a Year, Reality Lags Promises," 1 July 2018 Last year, the group moved the hands on the symbolic clock to two-and-a-half minutes from midnight, the closest it's been to midnight since 1953, when the hydrogen bomb was first tested. Editors, USA TODAY, "5 things you need to know Thursday," 25 Jan. 2018 In September, North Korea tested its first hydrogen bomb, vastly more powerful than its previous tests, and quickly followed up by testing its first intercontinental ballistic missiles capable of reaching the U.S. mainland. Matt Stiles, latimes.com, "South Korea's president was matchmaker for the nuclear summit — but could take the blame if it fails," 7 June 2018 During Trump’s first year in office, Kim raced ahead with breakthrough tests of a hydrogen bomb and missiles capable of hitting the US mainland. Jane Perlez, BostonGlobe.com, "Kim’s China visit strengthens his hand heading into nuclear talks," 28 Mar. 2018 But, so far, there’s been no independent confirmation that North Korea actually has a hydrogen bomb. Mirren Gidda, Newsweek, "What We Know About North Korea’s Hydrogen Bomb," 6 Jan. 2016 Most hydrogen bombs are rated in megatons, the equivalent of 1,000 kilotons. Popular Mechanics Editors, Popular Mechanics, "What To Do in a Nuclear Attack," 7 Feb. 2018 Stability North Korea rattled the region last year with its sixth underground nuclear explosion — of a possible hydrogen bomb — and 24 missile tests, including of a new intercontinental ballistic missile capable of hitting all of the United States. Motoko Rich, New York Times, "Nixon Did It. Why Not Trump? Crib Notes for a Presidential Summit," 11 June 2018 North Korea claimed the explosion was from a hydrogen bomb, a more complicated design that requires a nuclear bomb to trigger a secondary explosion that's vastly more destructive. NBC News, "North Korea's many nuclear weapons and how to rid the world of them," 11 June 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'hydrogen bomb.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of hydrogen bomb

1947, in the meaning defined above

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Last Updated

7 Nov 2018

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Time Traveler for hydrogen bomb

The first known use of hydrogen bomb was in 1947

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More Definitions for hydrogen bomb

hydrogen bomb

noun

English Language Learners Definition of hydrogen bomb

: a bomb that produces an extremely powerful and destructive explosion when hydrogen atoms unite

hydrogen bomb

noun

Kids Definition of hydrogen bomb

: a bomb whose great power is due to the sudden release of energy when the central portions of hydrogen atoms unite

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More from Merriam-Webster on hydrogen bomb

Rhyming Dictionary: Words that rhyme with hydrogen bomb

Spanish Central: Translation of hydrogen bomb

Nglish: Translation of hydrogen bomb for Spanish Speakers

Britannica.com: Encyclopedia article about hydrogen bomb

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