tannin

noun

tan·​nin ˈta-nən 

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

The process, called cold-leaching, removes the tannins from the acorns. —Sam Stone, Bon Appétit, 4 Nov. 2024

Renowned winemaker Randall Grahm is quite fond of this variety, which originated in Piedmont in northern Italy and is considered akin to Nebbiolo in its light color and rather firm tannins. —Laura Ness, The Mercury News, 6 Aug. 2024

Silky smooth tannins lead the way to flavors of red currant, cherry, clove, and raspberry with bracing minerality in the finish. —Mike Desimone and Jeff Jenssen, Robb Report, 24 Oct. 2024

The round texture with supple tannins, like ribbons of silk caressing the palate, is impressive, with fresh tobacco notes that balance the generous fruit. —Cathrine Todd, Forbes, 21 Oct. 2024

Word History

Etymology

French, from tanner to tan

First Known Use

1802, in the meaning defined at sense 1

Kids 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

Medical Definition

tannin

noun

tan·​nin ˈtan-ən 

1

: any of various soluble astringent complex phenolic substances of plant origin used in tanning, dyeing, the making of ink, and in medicine as astringents and formerly in the treatment of burns

2

: a substance that has a tanning effect