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English definition of “fissile”

fissile

adjective     /ˈfɪs.aɪl/ US  /-əl/
specialized geology (of rock) able to be divided easily into pieces: Because of its layered structure, mica is fissile.Fragile and breakable specialized physics (of atoms) able to produce nuclear fission: An amount of fissile material went missing as a result of the accident.Atoms, molecules and sub-atomic particles
(Definition of fissile adjective from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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