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4 definitions found
 for Atomic bomb
From The Collaborative International Dictionary of English v.0.48 :

  Nuclear weapon \Nu"cle*ar wea"pon\, n.
     A weapon of great explosive power, such as an atomic bomb
     or a hydrogen bomb, which depends for most of its explosive
     power on the release of energy from within atomic nuclei by a
     nuclear reaction. A fission weapon or a fusion weapon.
     The term includes atomic shells for cannon.
     [PJC]

From The Collaborative International Dictionary of English v.0.48 :

  Atomic \A*tom"ic\, Atomical \A*tom"ic*al\, a. [Cf. F. atomique.]
     1. Of or pertaining to atoms.
        [1913 Webster]
  
     2. Extremely minute; tiny.
        [1913 Webster]
  
     Atomic bomb, see atom bomb in the vocabulary.
  
     Atomic philosophy, or Doctrine of atoms, a system which,
        assuming that atoms are endued with gravity and motion,
        accounted thus for the origin and formation of all things.
        This philosophy was first broached by Leucippus, was
        developed by Democritus, and afterward improved by
        Epicurus, and hence is sometimes denominated the Epicurean
        philosophy.
  
     Atomic theory, or the Doctrine of definite proportions
        (Chem.), teaches that chemical combinations take place
        between the supposed ultimate particles or atoms of
        bodies, in some simple ratio, as of one to one, two to
        three, or some other, always expressible in whole numbers.
        
  
     Atomic weight (Chem.), the weight of the atom of an element
        as compared with the weight of the atom of hydrogen, taken
        as a standard.
        [1913 Webster]

From The Collaborative International Dictionary of English v.0.48 :

  Atom bomb \At"om bomb`\, Atomic bomb \A*tom"ic bomb`\n.
     a bomb of great power in which the explosive energy is
     derived from the nuclear fission of a fissionable material,
     such as plutonium or uranium-235. It is a type of nuclear
     weapon. The strength of an atom bomb is measured in kilotons,
     i.e. the equivalent energy released by explosion of a
     thousand tons of TNT. The first atomic bomb was manufactured
     in 1945.
  
     Syn: A-bomb, fission bomb.
          [PJC] Atomic

From WordNet (r) 3.0 (2006) :

  atomic bomb
      n 1: 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) [syn: atom bomb,
           atomic bomb, A-bomb, fission bomb, plutonium bomb]

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