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keratin (n.)

basic substance of horns, nails, feathers, etc., 1848, from Greek keras (genitive keratos) "horn of an animal; horn as a substance" (from PIE root *ker- (1) "horn; head") + chemical suffix -in (2).

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Definitions of keratin from WordNet

keratin (n.)
a fibrous scleroprotein that occurs in the outer layer of the skin and in horny tissues such as hair, feathers, nails, and hooves;
Synonyms: ceratin
From wordnet.princeton.edu

Dictionary Entries near keratin

Kenya

kepi

kept

*ker-

ker-

keratin

kerato-

kerb

kerchief

*kerd-

kerfuffle