fissile

/ˈfɪsəl/
adjective
  1. Capable of being split or divided, especially along natural lines.
    • The geologist explained that fissile materials break along flat planes.
    • Some minerals are more fissile than others, making them useful for roofing tiles.
    • Fissile rocks like shale split easily into thin layers.
  2. Capable of undergoing nuclear fission; used as fuel in nuclear reactors.
    • Scientists are researching safer ways to handle fissile substances.
    • Uranium-235 is a common fissile isotope used in power plants.
    • The country agreed to limit its production of fissile materials.
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