fissile
/ˈfɪsaɪl/adjective
1- (of an atom or element) able to undergo nuclear fission（原子或元素）可（核）裂变的：
a fissile isotope.
可裂变的同位素。
1.1
- (chiefly of rock) easily split（尤指岩石）易裂的, 可裂的：
flat-bedded and very highly fissile shale.
极易开裂的平层状页岩。
派生词
fissility
/fɪˈsɪlɪtɪ/ noun词源
mid 17th cent. （in the sense 'easily split'）： from Latin fissilis， from fiss -'split, cracked', from the verb findere.