1. plural of fission; the splitting of an atomic nucleus into two or more parts, releasing energy
Usage: physics
2. plural of fission; the division of a cell or organism into two or more parts as a form of reproduction
Usage: biology

Examples

• Nuclear fissions release enormous amounts of energy in power plants.
• The reactor controls the rate of uranium fissions to generate electricity.
• Scientists study atomic fissions to understand nuclear reactions.
• Bacterial fissions allow single cells to reproduce rapidly.
• The biology textbook explained how cellular fissions create new organisms.
• Multiple fissions occurred simultaneously in the nuclear reaction.
• Researchers observed several fissions under the microscope.