tannin
Use Tannin in a sentence
ɪn noun
1.
Chemistry. any of a group of astringent vegetable principles or compounds, chiefly complex glucosides of catechol and pyrogallol, as the reddish compound that gives the tanning properties to oak bark or the whitish compound that occurs in large quantities in nutgalls (common tannin, tannic acid)
2.
any of these compounds occurring in wine and imparting an astringent taste, especially in red wine.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
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Based on the Random House Dictionary, © Random House, Inc. 2013.
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Link To tannin
Collins
World English Dictionary
tannin (ˈtænɪn) ![[Click for IPA pronunciation guide]](http://static.sfdict.com/dictstatic/g/d/dictionary_questionbutton_default.gif) | |
| —n | |
| Also called: tannic acid any of a class of yellowish or brownish solid compounds found in many plants and used as tanning agents, mordants, medical astringents, etc. Tannins are derivatives of gallic acid with the approximate formula C76H52O46 | |
| [C19: from French tanin, from | |
Collins English Dictionary - Complete & Unabridged 10th Edition
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2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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00:10
Tannin
is always a great word to know.
So is labile. Does it mean:
| a colorless, oily, water-soluble, highly toxic, liquid alkaloid, C10H14N2, found in tobacco and valued as an insecticide |
| a compound capable of changing state or becoming inactive when subjected to heat or radiation |
Etymonline
Word Origin & History
tannin
vegetable substance capable of converting animal hide to leather, 1802, from Fr. tannin (1798), from tan "crushed oak bark containing tannin" (see tan). Tannic acid first recorded 1836, from Fr. acide tannique, inroduced 1834 by Pelouze.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Science Dictionary
| tannin (tān'ĭn) Pronunciation Key
Any of various compounds, including tannic acid, that occur naturally in the bark and fruit of various plants, especially the nutgalls, certain oaks, and sumac. Tannins are polyphenols, and form yellowish to light brown amorphous masses that can be powdery, flaky, or spongy. They are used in photography, dyeing, in tanning leather, in clarifying wine and beer, and as an astringent in medicine. Tannins are also an important ingredient in tea. |
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences
Emissions from tannin-based composite panels are certainly low, but formaldehyde is critical to the adhesive process.
Yet, every now and again, a tannin-rich red wine that does go well with seafood turns up.
Tannin is contained in the bark as well as in the wood, leaves and seed husks.
Tannin rich peanut skins lack anthelmintic properties.
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