TWENTY-FIRST
\twˈɛntifˈɜːst], \twˈɛntifˈɜːst], \t_w_ˈɛ_n_t_i_f_ˈɜː_s_t]\
Word of the day
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.