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atom bomb

Origin of atom bomb


[at-uh m-bom] /ˈæt əmˈbɒm/
verb (used with object)
to bomb (a target) with an atomic bomb.
verb (used without object)
to atom-bomb a target.

atomic bomb

or atom bomb

a bomb whose potency is derived from nuclear fission of atoms of fissionable material with the consequent conversion of part of their mass into energy.
a bomb whose explosive force comes from a chain reaction based on nuclear fission in U-235 or plutonium.
Also called A-bomb, fission bomb.
1910-15 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for atom bomb
Contemporary Examples
Historical Examples
  • It has become the old problem once presented by the atom bomb.

    The Time Traders Andre Norton
  • No more tricks like the phony colonel and the atom bomb that didn’t ‘explode.

    Space Platform Murray Leinster
  • Whatever the fire was, it was a defense against the atom bomb, for it exploded them before they could reach their targets.

    Of Stegner's Folly Richard S. Shaver
  • An atom bomb would destroy aliens and their ship together—and we want the ship.

    Operation Terror William Fitzgerald Jenkins
  • In a way, if an atom bomb had to be used to destroy them, they would have succeeded.

    Operation Terror William Fitzgerald Jenkins
  • For man had discovered in the atom bomb a weapon which proved to be the agency of his destruction.

    Once Upon A Planet J. J. Allerton
British Dictionary definitions for atom bomb

atomic bomb

a type of bomb in which the energy is provided by nuclear fission. Uranium-235 and plutonium-239 are the isotopes most commonly used in atomic bombs Also called A-bomb, fission bomb Compare fusion bomb
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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atom bomb in Science
atomic bomb  
A very destructive bomb that derives its explosive power from the fission of atomic nuclei. Atomic bombs usually have plutonium 239 or uranium 235 as their fissionable material. Also called atom bomb.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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atom bomb in Culture
atomic bomb (A-bomb)

A nuclear weapon whose enormous explosive power results from the sudden release of energy from a fission reaction. (See also Hiroshima, hydrogen bomb, Nagasaki, and Strategic Arms Limitation Talks [SALT].)

atomic bomb definition

A bomb that is powered by nuclear fission, and therefore produces a quick release of energy and great destruction.

The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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