fission
noun [ U ] uk/ˈfɪʃ.ən/ us/ˈfɪʃ.ən/
physics specialized（核）裂变，分裂
the process of dividing the nucleus of an atom, resulting in the release of a large amount of energy
nuclear fission 核裂变
biology specialized细胞分裂;裂殖
the division of a living cell as part of reproduction
The fission of the cell could be inhibited with certain chemicals. 细胞裂殖可以靠某些化学制品加以抑制。