fissile

adjective

1. capable of undergoing nuclear fission

   adj.all

   Synonyms fissionable

   Antonyms nonfissionable

   Source: WordNet 3.0

2. capable of being split or cleft or divided in the direction of the grain

   adj.all

   Examples

   Fissile crystals.

   Fissile wood.

   Antonyms nonfissile

   Source: WordNet 3.0

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

   adjective

   Source: webster1913