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Meaning of conchiolin

con•chi•o•lin

Pronunciation: (kong-kī'u-lin), [key]
— n. Biochem.
  1. a fibrous protein that forms the iridescent inner layer, as mother-of-pearl, in the shells of mollusks.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.