Definitions for tanninˈtæn ɪn

This page provides all possible meanings and translations of the word tannin

Princeton's WordNet

  1. tannin, tannic acid(noun)

    any of various complex phenolic substances of plant origin; used in tanning and in medicine

Wiktionary

  1. tannin(Noun)

    Tannic acid or any of its derivatives.

Webster Dictionary

  1. Tannin(noun)

    same as Tannic acid, under Tannic

Freebase

  1. Tannin

    A tannin is an astringent, bitter plant polyphenolic compound that binds to and precipitates proteins and various other organic compounds including amino acids and alkaloids. The term tannin refers to the use of wood tannins from oak in tanning animal hides into leather; hence the words "tan" and "tanning" for the treatment of leather. However, the term "tannin" by extension is widely applied to any large polyphenolic compound containing sufficient hydroxyls and other suitable groups to form strong complexes with various macromolecules. The tannin compounds are widely distributed in many species of plants, where they play a role in protection from predation, and perhaps also as pesticides, and in plant growth regulation. The astringency from the tannins is what causes the dry and puckery feeling in the mouth following the consumption of unripened fruit or red wine. Likewise, the destruction or modification of tannins with time plays an important role in the ripening of fruit and the aging of wine.

The Nuttall Encyclopedia

  1. Tannin

    an astringent principle found in gallnuts and the bark chiefly of the oak.


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