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tannic acid

[ tan-ik as-id ]
/ ˈtæn ɪk ˈæs ɪd /
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noun Chemistry.

a form of tannin with weak acidity, used commercially in dyes and wood stains; corrosion inhibitors; certain antihistamine, antitussive, and antidiarrhea medications; and especially wine, beer, and other beverages that benefit from its clarifying and aroma-enhancing properties: Aleppo galls are among the principal sources of tannic acid.

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Origin of tannic acid

First recorded in 1830–40
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

How to use tannic acid in a sentence

Medical definitions for tannic acid

tannic acid

n.

A white or yellowish astringent powder used as a denaturant and in tanning and textiles.
A lustrous yellowish to light brown amorphous, powdered, flaked, or spongy mass derived from the bark and fruit of many plants and used as a mordant and to clarify wine and beer.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Scientific definitions for tannic acid

tannic acid
[ tănĭk ]

A lustrous, yellow-brown, amorphous substance, having the approximate chemical composition C76H52O46. It is derived from the bark and fruit of many plants and is used in tanning leather, in fixing dyes to materials, and in clarifying wine and beer.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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