ALL meanings of nuclear fission
nu·cle·ar fis·sion
N n - noun nuclear fission fission (def 2). 1
- noun nuclear fission the splitting of an atomic nucleus into approximately equal parts, either spontaneously or as a result of the impact of a particle usually with an associated release of energy 0
- noun nuclear fission the splitting of the nuclei of atoms into two fragments of approximately equal mass, accompanied by conversion of part of the mass into energy: the principle of the atomic bomb 0