keratin Hear it!

keratin definition

kera·tin (ker′ə tin)

noun

a tough, fibrous, insoluble protein forming the principal matter of hair, nails, horn, etc.

Etymology: kerat(o)- + -in

Related Forms:

  • keratinous ke·rat′i·nous (kə rat′'n əs) adjective or keratinoid ke·rat′i·noid′ (-o̵id′)

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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