THESAURUS
nuclear fission
alpha decay, atom-chipping, atom-smashing, atomic disintegration, atomic reaction, atomization, beta decay, bombardment, breeding, bullet, chain reaction, cleavage, disintegration series, dissociation, exchange reaction, fission, fission reaction, gamma decay, ionization, neutron reaction, nonreversible reaction, nucleization, photodisintegration, proton gun, proton reaction, reversible reaction, splitting the atom, stimulation, target, thermonuclear reaction