Home › Words › Q › quasifissionquasifissionquasifission means partial fusion followed by fission of very large atomic nuclei, a possible means of generating neutron-rich isotopes.EtymologyFrom quasi- + fission.nounPartial fusion followed by fission of very large atomic nuclei, a possible means of generating neutron-rich isotopesDefinitions & examples from Wiktionary (CC BY-SA 3.0).