1
: any of various soluble astringent complex phenolic substances of plant origin used especially in tanning leather and dyeing textiles, manufacturing ink, clarifying wine and beer, and in medicine
2
: a substance that has a tanning effect
Examples of tannin in a Sentence
Recent Examples on the Web
Their Ashes & Diamonds 2019 V.1 Bordeaux-style red blend has aromas of cassis, black raspberry, and graphite with rounded tannins and flavors of black cherry, tobacco leaf, and black currant.
—
Mike Desimone, Robb Report, 10 July 2025
Very elegant and streamlined with silky tannins, and a long finish with refreshing acidity.
—Liz Thach, Forbes.com, 8 July 2025
Many of North Carolina’s rivers and lakes are rich in tannins—a naturally occurring compound found in trees—which seems to help protect the wooden vessels.
—Sarah Kuta, Smithsonian Magazine, 2 July 2025
While not all wines are keg-friendly, Mincey said white wines and those with lower tannins tend to store best on tap.
—Irene Adeline Milanez, Sacbee.com, 28 June 2025
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Mike Desimone, Robb Report, 10 July 2025
Very elegant and streamlined with silky tannins, and a long finish with refreshing acidity.
—Liz Thach, Forbes.com, 8 July 2025
Many of North Carolina’s rivers and lakes are rich in tannins—a naturally occurring compound found in trees—which seems to help protect the wooden vessels.
—Sarah Kuta, Smithsonian Magazine, 2 July 2025
While not all wines are keg-friendly, Mincey said white wines and those with lower tannins tend to store best on tap.
—Irene Adeline Milanez, Sacbee.com, 28 June 2025
See All Example Sentences for tannin
Cite this Entry
“Tannin.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/tannin. Accessed 18 Jul. 2025.
Copy CitationKids Definition
tannin
noun
tan·nin
ˈtan-ən 
: any of various substances from plants (as the oak or sumac) used in tanning leather, dyeing fabric and yarn, the making of ink, and in medicine
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