A narrow band or ribbon-like structure, especially an anatomical term for bands of nerve fibers or a small band on a sea urchin test (shell).
From fasciola (band), with English diminutive -le marker. Used in both anatomical and malacological (mollusk) contexts.
Sea urchins have tiny fascioles—delicate grooved lines on their hard shells that look decorative but actually serve specific functions in water flow and protection.
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