In crystallography or geology, the fitting together or interlocking of mineral crystals or rock fragments.
From French 'emboîtement' (fitting together), from 'emboîter' (to fit into). A French geological term adopted in scientific literature.
Geologists borrowed the French word for 'fitting together' to describe how crystals puzzle themselves into perfect interlocking patterns—it's the visual definition of how minerals are patient architects!
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