klyvbar
Klyvbar is a Norwegian adjective meaning capable of undergoing nuclear fission, i.e., able to be split by neutron-induced fission. It comes from klyv ('to cleave, split') and the suffix -bar ('capable of'). In English, the closest equivalent is fissile. In scientific and regulatory contexts, klyvbar describes materials that can sustain a chain reaction when irradiated by neutrons, typically in a nuclear reactor or an explosive device. The distinction is significant: fissile materials can sustain a chain reaction with slow neutrons, whereas other materials may be merely fissionable under different neutron energies.
Common examples of klyvbare materials include certain isotopes such as uranium-235, uranium-233, and plutonium-239. The label
Because klyvbar materials are tightly regulated, discussions around them emphasize safety, security, and non-proliferation. International regimes,
In everyday use, the term appears primarily in technical and legal contexts rather than general discourse.