nuclear fission
noun /ˌnjuːkliə ˈfɪʃn/
/ˌnuːkliər ˈfɪʃn/
(also fission)
[uncountable] (physics- the act or process of splitting the nucleus (= central part) of an atom, when a large amount of energy is released
Topics Physics and chemistryc2(核)裂变,分裂