tannin

/ˈtænən/
IPA guide

Other forms: tannins

Definitions of tannin
  1. noun
    any of various complex phenolic substances of plant origin; used in tanning and in medicine
    synonyms: tannic acid
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    types:
    cutch, kutch
    tannin extract derived from any of several mangrove barks of Pacific areas
    catechin
    a tannic acid that is extracted from black catechu as a white crystalline substance
    type of:
    phenol
    any of a class of weakly acidic organic compounds; molecule contains one or more hydroxyl groups
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