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{%type%} Definitions

WordNet 3.0Copyright Princeton University
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Short "hint"

A tannic acid that is extracted from black catechu as a white crystalline substance.

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Usage examples (36)
  • The polyphenol called catechin from Green Tea has also been said to effectively inhibit metastasis
  • The polyphenol called catechin from Green Tea has also been said to effectively inhibit metastasis (uncontrolled spread) of melanoma cells on the skin.
  • The catechin content varies by amount of green tea used and steeping time.
  • The secret to this lies in the high concentrations of catechin polyphenols.
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The Open Dictionary of English is a collaborative project, based on Open Source materials, LearnThat resources, and partner APIs.
We give special thanks to our LearnThat volunteers, as well as Princeton University and Wiktionary for their Open Source word data. We're also grateful for the support given by Google, Wordnik.com, Dictionary.com, Stands4.com and YouTube, OEDILF.com, Kylescholz.com, Best-Practice.com, Forvo.com, as well as the generous Creative Commons community.