1. having a shell-like curved surface or fracture pattern
Usage: geology; mineralogy

Examples

• The obsidian showed a characteristic conchoidal fracture when struck.
• Flint knapping relies on the conchoidal fracturing properties of certain stones.
• The geologist identified the mineral by its conchoidal break pattern.
• Glass typically exhibits conchoidal fractures when broken.
• Ancient toolmakers preferred rocks with conchoidal fracturing for making sharp edges.
• The specimen displayed smooth, curved conchoidal surfaces.