A nuclide of an element that undergoes nuclear fission, either spontaneously or when irradiated by neutrons. Fissile nuclides, such as uranium–235 and plutonium–239, are used in nuclear reactors and nuclear weapons. Comparefertile material.
Chemical Engineering
A radionuclide of an element that undergoes nuclear fission either spontaneously or through being irradiated by neutrons. Examples include uranium-235 and plutonium-239 used in nuclear reactors. Fissile materials are also used in nuclear weapons.