\bˈɔːldhɛd], \bˈɔːldhɛd], \b_ˈɔː_l_d_h_ɛ_d]\
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1899 - The american dictionary of the english language.
By Daniel Lyons
1871 - The Cabinet Dictionary of the English Language

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Nuclear Fissions

  • Nuclear reaction in which the nucleus of heavy atom such as uranium plutonium is split into two approximately equal parts by a neutron, charged particle, or photon.
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