Refers to a radionuclide which can break into two large fragments accompanied by the release of free neutrons and large amounts of energy. A few man-made radionuclides are so unstable that they fission spontaneously; others can do so if the nucleus captures a neutron.
Easily split along parallel layers.
Rock characterised by a tendency to split readily along planes of bedding or cleavage.
capable of being split or cleft or divided in the direction of the grain; "fissile crystals"; "fissile wood"
Capable of being split or divided (fissioned) by the absorption of thermal neutrons. The most common fissile materials are uranium-233, uranium-235, and plutonium-239.
Able to be split into fine layers.
Capable of undergoing fission by interaction with neutrons. Fissile isotopes used in nuclear weapons include uranium-235 and plutonium-239.
Referring to a nuclide capable of undergoing fission by thermal neutrons (e.g. U-233, U-235, Pu-239).
Capable of capturing a slow (thermal) neutron and undergoing nuclear fission, e.g. U-235, U-233, Pu-239.
(of a rock) that can be split or divided easily along close parallel planes. [ADHOS
In nuclear engineering, a fissile material is one that is capable of sustaining a chain reaction of nuclear fission.
