'fibroin' definitions:

Definition of 'fibroin'

From: GCIDE

fibroin \fi"bro*in\ (f[imac]"br[-o]*[i^]n or f[i^]b"r[-o]*[i^]n), n. [L. fibra a fiber.] (Chem.) A variety of gelatin; the chief ingredient of raw silk, extracted as a white amorphous mass. [1913 Webster]