Found 2 items, similar to fissionable.
English → English (WordNet) Definition: fissionable fissionable adj : capable of undergoing nuclear fission; “a fissionable nucleous”; “fissionable material” [syn: fissile] [ant: nonfissionable]
English → English (gcide) Definition: fissionable fissionable \fis"sion*able\, a. Capable of undergoing nuclear fission; -- a property of certain isotopes of elements with heavy nuclei. Syn: fissile. [PJC]