Weapon deriving a large portion of its energy from the nuclear fusion of hydrogen isotopes.
The first atomic bomb was produced at the Los Alamos, N.Mex., laboratory and successfully tested on July 16, 1945. Weapon deriving its explosive force from the release of nuclear energy through the fission (splitting) of heavy atomic nuclei. Fallout, minute particles of radioactive material produced by nuclear explosions (see atomic bomb atomic bomb
