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fission

noun [U]
 
 
/ˈfɪʃ.ən/ specialized

Definition

the process of dividing the nucleus of an atom, which results in the release of a large amount of energy, or the division of a living cell as part of reproduction: nuclear fission The fission of the cell could be inhibited with certain chemicals.CellsPhysical and chemical processes
(Definition of fission noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

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