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WordReference Random House Learner's Dictionary of American English © 2024ˈhy•dro•gen ˌbomb, n. [countable]- Physicsa bomb that takes its explosive energy from the fusion of hydrogen atoms. Also called H-bomb.
See -hydr-. WordReference Random House Unabridged Dictionary of American English © 2024hy′drogen bomb′, - a bomb, more powerful than an atomic bomb, that derives its explosive energy from the thermonuclear fusion reaction of hydrogen isotopes. Also called H-bomb, fusion bomb, thermonuclear bomb.
Collins Concise English Dictionary © HarperCollins Publishers:: hydrogen bomb n - a type of bomb in which energy is released by fusion of hydrogen nuclei to give helium nuclei. The energy required to initiate the fusion is provided by the detonation of an atomic bomb, which is surrounded by a hydrogen-containing substance such as lithium deuteride
Also called: H-bomb
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