F₄I₁S₁S₁I₁O₁N₁A₁B₃L₁E₁

16 points

FISSIONABLE is validvalid

something that can be fissioned [n FISSIONABLES]

151,217 of 196,601 in NWL2023·also valid in CSW24

that can undergo fission [adj] / a fissionable material [n -S]

89,170 of 280,887 in CSW24·also valid in NWL2023