1. the quality or property of being easily split or divided into thin layers or sheets
Usage: commonly used in geology and materials science
2. in geology, the tendency of certain rocks (such as shale) to break naturally along parallel planes
Usage: technical term in geology and mineralogy

Examples

• The fissility of slate makes it ideal for roofing tiles.
• Geologists study the fissility of rock formations to understand their structural properties.
• The mineral's high fissility allows it to be split into thin, transparent sheets.
• Shale exhibits excellent fissility, breaking easily along bedding planes.
• The fissility of the material was tested by attempting to separate it into layers.