Definition of atom bomb in English:

atom bomb

Line breaks: atom bomb
(also atomic bomb)

noun

A bomb which derives its destructive power from the rapid release of nuclear energy by fission of heavy atomic nuclei, causing damage through heat, blast, and radioactivity.
More example sentences
  • The simple atom bomb owed its explosive power to the energy released by nuclear fission, or fusion.
  • The blast was 600 times as violent as the Hiroshima atom bomb and shot a nuclear cloud more than 17 miles high into the air.
  • Now and then, historic images are etched in the mass mind: the awesome mushroom cloud of the atom bomb will forever represent the specter of nuclear destruction.

Such a bomb contains a critical mass of a material such as uranium-235 or plutonium-239, which when detonated by a conventional explosive charge is capable of maintaining a nuclear chain reaction, releasing large amounts of energy almost instantaneously

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Word of the day grammarian
Pronunciation: grəˈmɛːrɪən
noun
a person who studies and writes about grammar