Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun A crystalline flavonoid substance, C15H14O6, derived from catechu and used in tanning and dyeing.

from The Century Dictionary.

  • noun A principle (C19H18O8) extracted from catechu, having a snow-white silky appearance, and crystallizing in fine needles. Also called catechuic acid and catechuin.

from the GNU version of the Collaborative International Dictionary of English.

  • noun (Chem.) One of the tannic acids (C15H14O6), extracted from catechu as a white, crystalline substance; -- called also catechuic acid, catechinic acid, cyanidol, and catechuin. It is a flavonoid found generally in higher woody plants, and is used in dyeing and tanning.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun organic chemistry catechol

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun a tannic acid that is extracted from black catechu as a white crystalline substance

Etymologies

from The American Heritage® Dictionary of the English Language, 4th Edition

[catech(u) + –in.]

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Examples

  • Green tea contains an especially high amount of antioxidants -- in particular, a type of polyphenol called a catechin, the most active and abundant of which is epigallocatechin-3-gallate EGCG.

    The Full Feed from HuffingtonPost.com The Huffington Post News Editors 2011

  • The polyphenol called catechin from Green Tea has also been said to effectively inhibit metastasis

    Wil's Ebay E-Store amp;34;Acai Berry 2010

  • The polyphenol called catechin from Green Tea has also been said to effectively inhibit metastasis

    Wil's Ebay E-Store amp;34;Acai Berry 2010

  • The polyphenol called catechin from Green Tea has also been said to effectively inhibit metastasis

    Wil's Ebay E-Store amp;34; 2010

  • The polyphenol called catechin from Green Tea has also been said to effectively inhibit metastasis

    Wil's Ebay E-Store amp;34; 2010

  • The polyphenol called catechin from Green Tea has also been said to effectively inhibit metastasis

    Wil's Ebay E-Store amp;34;Acai Berry 2010

  • The polyphenol called catechin from Green Tea has also been said to effectively inhibit metastasis

    Wil's Ebay E-Store amp;34;Acai Berry 2010

  • The polyphenol called catechin from Green Tea has also been said to effectively inhibit metastasis

    Wil's Ebay E-Store amp;34;Acai Berry 2010

  • The polyphenol called catechin from Green Tea has also been said to effectively inhibit metastasis

    Wil's Ebay E-Store amp;34;Acai Berry 2010

  • The polyphenol called catechin from Green Tea has also been said to effectively inhibit metastasis

    Wil's Ebay E-Store amp;34;Acai Berry 2010

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