Capable of
being split, cleft, or
divided in the direction of the corn,
like tree, or along
natural planes of cleavage,
like crystals. "This
crystal is a pellucid,
fissile stone." (Sir I. Newton)
Origin: L. Fissilis, fr. Fissus, p.p. Of findere to split. See Fissure.
Source: Websters Vocabulary