noun[mass noun] Zoology
A tough, insoluble protein secreted by molluscs, forming the organic matrix of the shell within which calcium carbonate is deposited.
- Moreover, the chambers were divided by a system of numerous intracameral layers of conchiolin and protein.
- The core of those structures is made of a protein called conchiolin, a common component of many mollusk shells.
- Tropical shells tend to have higher metabolic and growth rates with higher conchiolin content.
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