SG Heritage Dictionary

Fissile [Adjective] Webster's Dictionary 1828

1. That may be split, cleft or divided in the direction of the grain, or of natural joints.

2. This crystal is a pellucid fissile stone.

Fissile [Adjective] Webster's Dictionary 1913

Capable of being split, cleft, or divided in the direction of the grain, like wood, or along natural planes of cleavage, like crystals.