sclerotin

noun
scler·o·tin | \ˈskler-ə-tən, sklə-ˈrō-tᵊn\

Definition of sclerotin 

: an insoluble tanned protein permeating and stiffening the chitin of the cuticle of arthropods

First Known Use of sclerotin

1940, in the meaning defined above

History and Etymology for sclerotin

probably scler- + -tin (as in chitin)

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The first known use of sclerotin was in 1940

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