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fission

Definitions of fission
  1. noun
    reproduction of some unicellular organisms by division of the cell into two more or less equal parts
    synonyms: scissiparité
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    type of:
    reproduction asexuée
    reproduction without the fusion of gametes
  2. noun
    a nuclear reaction in which a massive nucleus splits into smaller nuclei with the simultaneous release of energy
    synonyms: fission nucléaire
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    type of:
    réaction nucléaire
    (physics) a process that alters the energy or structure or composition of atomic nuclei
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