fissionable

from WordNet (r) 3.0 (2006)

fissionable
    adj 1: capable of undergoing nuclear fission; "a fissionable
           nucleous"; "fissionable material" [syn: {fissionable},
           {fissile}] [ant: {nonfissionable}]

from The Collaborative International Dictionary of English v.0.48

fissionable \fis"sion*able\, a.
   Capable of undergoing {nuclear fission}; -- a property of
   certain isotopes of elements with heavy nuclei.

   Syn: fissile.
        [PJC]

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