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Dictionary.com Unabridged (v 1.1) - Cite This Source - Share This
atom bomb
–noun
atomic bomb.
[Origin: 1940–45]
Dictionary.com Unabridged (v 1.1)
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2006.
Encyclopædia Britannica, Inc.
atom bomb

To learn more about atom bomb visit Britannica.com

© 2008 Encyclopædia Britannica, Inc.
Dictionary.com Unabridged (v 1.1) - Cite This Source - Share This
at·om-bomb    Audio Help   [at-uhm-bom] Pronunciation Key
–verb (used with object)
1.to bomb (a target) with an atomic bomb.
–verb (used without object)
2.to atom-bomb a target.
[Origin: 1940–45]
Dictionary.com Unabridged (v 1.1)
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2006.
American Heritage Dictionary - Cite This Source - Share This
atom bomb  
n.  
  1. An explosive weapon of great destructive power derived from the rapid release of energy in the fission of heavy atomic nuclei, as of uranium 235. Also called A-bomb, atomic bomb, fission bomb.
  2. A bomb deriving its destructive power from the release of nuclear energy.

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The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2006 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
WordNet - Cite This Source - Share This
atom bomb

noun
a nuclear weapon in which enormous energy is released by nuclear fission (splitting the nuclei of a heavy element like uranium 235 or plutonium 239) 

WordNet® 3.0, © 2006 by Princeton University.

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