verb
- undergoing nuclear fission; splitting into two or more parts
Usage: physics; present participle of fission
Examples
- The uranium atom is fissioning in the reactor core.
- Scientists observed the heavy nucleus fissioning into lighter elements.
- The fissioning process releases enormous amounts of energy.
- Plutonium-239 is capable of fissioning when struck by neutrons.
- The fissioning material must be carefully controlled in nuclear reactors.
- Researchers studied the rate at which the isotope was fissioning.