tannin Hear it!

tannin definition

tan·nin (tan′in)

noun

any of a group of naturally occurring phenolic compounds that precipitate proteins, alkaloids, and glucosides from solution, and convert hide into leather, including tannic acid: some are present in coffee and tea

Etymology: Fr tanin < tan, tan + -in, -in

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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