Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun fission

2 senses of fission

Sense 1
fission -- (reproduction of some unicellular organisms by division of the cell into two more or less equal parts)
       => asexual reproduction, agamogenesis -- (reproduction without the fusion of gametes)

Sense 2
fission, nuclear fission -- (a nuclear reaction in which a massive nucleus splits into smaller nuclei with the simultaneous release of energy)
       => nuclear reaction -- ((physics) a process that alters the energy or structure or composition of atomic nuclei)