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
Black tea has the highest tannin content, and green tea has the lowest.
—
Melissa Nieves, Verywell Health, 21 May 2025
Beautifully balanced with plush tannins and gorgeous acidity, this wine is drinking perfectly right now, but those who can wait will be rewarded for their patience for up to 20 years.
—Mike Desimone, Robb Report, 18 May 2025
The palate leads with some light tropical fruit—fresh pineapple, ripe papaya—with some tannins in the realm of cigar box and fermented tea leaves.
—David Thomas Tao, Forbes.com, 15 May 2025
Like sunshine on a cloudy day, this pantry staple magically neutralizes the tannins, creating a crystal clear liquid.
—Lisa Cericola, Southern Living, 6 May 2025
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Melissa Nieves, Verywell Health, 21 May 2025
Beautifully balanced with plush tannins and gorgeous acidity, this wine is drinking perfectly right now, but those who can wait will be rewarded for their patience for up to 20 years.
—Mike Desimone, Robb Report, 18 May 2025
The palate leads with some light tropical fruit—fresh pineapple, ripe papaya—with some tannins in the realm of cigar box and fermented tea leaves.
—David Thomas Tao, Forbes.com, 15 May 2025
Like sunshine on a cloudy day, this pantry staple magically neutralizes the tannins, creating a crystal clear liquid.
—Lisa Cericola, Southern Living, 6 May 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 3 Jun. 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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