fis·sion
noun/ˈfɪʃn/
/ˈfɪʃn/
[uncountable]- (also nuclear fission)(physics) the act or process of splitting the nucleus (= central part) of an atom, when a large amount of energy is released
（核）裂变，分裂 WordfinderTopics Physics and chemistryc2- amplitude
- atom
- energy
- fission
- force
- frequency
- gravity
- molecule
- nuclear
- physics
- (biology) the division of cells as a method of producing new cells
裂体生殖
Word Originearly 17th cent.: from Latin fissio(n-), from findere ‘to split’.