fissile

形容词 fissile:

1. capable of undergoing nuclear fission
   同义词：fissionable
2. capable of being split or cleft or divided in the direction of the grain

fis.sile

adj.（形容词）
Possible to split.
易裂的，可裂的
Physics Fissionable, especially by neutrons of all energies.
【物理学】 可裂变的：尤指用全能的中子可分裂的
Geology Easily split along close parallel planes.
【地质学】 易裂的：容易沿临近并行平面分裂的

来源：
Latin fissilis
拉丁语 fissilis
from fissus [split] * see fissi-
源自 fissus [分裂，裂开] *参见 fissi-

【引伸】
fissil.ity