1. The plural of fissility; the quality or state of being easily split or cleft along natural planes or layers.
Usage: Primarily used in geology and materials science; Refers to the tendency of rocks (especially shale) to break into thin sheets or flakes

Examples

• The fissilities of different slate samples vary depending on their mineral composition.
• Geologists study the fissilities of rock formations to understand their structural properties.
• The high fissilities of shale make it useful for splitting into roofing tiles.
• Variations in fissilities across the sedimentary layers indicate different depositional environments.
• Engineers must account for the fissilities of certain rocks when planning excavation projects.