atomic_bomb has definitions from the fields of physics,military,nuclear physics,arms
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[ noun ] (physics,military,nuclear physics,arms) a nuclear weapon in which enormous energy is released by nuclear fission (splitting the nuclei of a heavy element (uranium 235 or plutonium 239))

Used in print

(Frank Oppenheimer, "Science and Fear-- A Discussion...)

We are not now afraid of atomic_bombs in the same way that people once feared comets .

(LeRoy Fothergill, "Biological Warfare", in Peter...)

If it is possible for an enemy to put an atomic_bomb on a city , it should be equally possible to put a cloud of biological agent over that city .

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