fission
— Noun
– English
~ reproduction of some unicellular organisms by division of the cell into two more or less equal parts
fission bomb
— Noun
– English
~ a nuclear weapon in which enormous energy is released by nuclear fission (splitting the nuclei of a heavy element like uranium 235 or plutonium 239)
fission
— Noun
– English
~ a nuclear reaction in which a massive nucleus splits into smaller nuclei with the simultaneous release of energy
fissionable
— Adjective
– English
~ capable of undergoing nuclear fission; "a fissionable nucleous"; "fissionable material"