nuclear weapon

noun
an explosive device whose destructive potential derives from the release of energy that accompanies the splitting or combining of atomic nuclei.

Origin:
1945–50

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Based on the Random House Dictionary, © Random House, Inc. 2014.
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American Heritage
Science Dictionary
nuclear weapon  
A weapon whose destructive power comes from nuclear energy; an atomic bomb or a hydrogen bomb.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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American Heritage
Cultural Dictionary

nuclear weapon definition


Any weapon that employs a nuclear reaction for its explosive power. Nuclear weapons include ballistic missiles, bombs (see atomic bomb and hydrogen bomb), artillery rounds, and mines.

The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
Cite This Source
Example sentences
Over time, the guarded knowledge of how to build a nuclear weapon has only
  widened.
If that same container held chemical or biological agents, or a nuclear weapon,
  the social costs would be incalculable.
They have plans that can be used to make a nuclear weapon.
We do not know with confidence the location of any nuclear weapon-related
  facilities.
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