atom_bomb has definitions from the fields of physics,military,nuclear physics,arms
1
[ 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

(Brainard Cheney, "Christianity and the Tragic Vision-Ut...)

the atom_bomb .

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