Fissile
Fissile , adjective
[Latin fissilis, from fissus, past participle of findere to split. See Fissure.]
1.
Capable of being split, cleft, or divided in the direction of the grain, like wood, or along natural planes of cleavage, like crystals.
This crystal is a pellucid, fissile stone.
2.
Fissionable.