Definition of conchiolin in English:

Share this entry


Pronunciation: /ˈkɒntʃɪə(ʊ)lɪn/


[mass noun] Zoology
A tough, insoluble protein secreted by molluscs, forming the organic matrix of the shell within which calcium carbonate is deposited.
Example sentences
  • 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.


Late 19th century: from Latin concha 'shell' + the diminutive suffix -iola + -in1.

For editors and proofreaders

Line breaks: con|chio¦lin

Share this entry

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.