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Definition of tannin

tannin

/ˈtæn.ɪn/
tan · nin
Plural:tannins
•
Adjective:tannic
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tannin Lexical Profile

tannin Game Scores & Validity

• noun

1

Any of a class ofbitter, astringent polyphenolic organic compounds found in various plant tissues—such as oak bark, grape skins, tea leaves, and unripe fruits—used commercially in tanning leather, dyeing fabrics, and clarifying wine or beer.

Example

"Steeping the black tea leaves for too long releases excess tannin, giving the brew a noticeably bitter and dry taste."

Synonyms
View all synonyms for tannin

• Rhymes for tannin

• Nearby Words

tanner
tannery
tannic
tannin
tanning
tannish
tannoy

Word Origin & Etymology

Borrowed in the late 18th century from French 'tannin', derived from the verb 'tanner' (to tan hides), which comes from Medieval Latin 'tannare' and ultimately from a Celtic root referring to the oak tree whose bark was used in leatherworking.

Cite this Entry

Wordmom. (2026). Definition of Tannin. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/tannin
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