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tannin

n. 单宁酸

单宁酸

WordNet (r) 3.0 (2006) (WordNet)

tannin
n 1: any of various complex phenolic substances of plant origin;
used in tanning and in medicine [synonym: {tannin}, {tannic
acid}]

The Collaborative International Dictionary of English v.0.48 (gcide)

Tannic \Tan"nic\, a.
Of or pertaining to tan; derived from, or resembling, tan;
as, tannic acid.
[1913 Webster]

{Tannic acid}. (Chem.)
(a) An acid obtained from nutgalls as a yellow amorphous
substance, {C14H10O9}, having an astringent taste, and
forming with ferric salts a bluish-black compound, which
is the basis of common ink. Called also {tannin}, and
{gallotannic acid}.
(b) By extension, any one of a series of astringent
substances resembling tannin proper, widely diffused
through the vegetable kingdom, as in oak bark, willow,
catechu, tea, coffee, etc.
[1913 Webster]

Tannin \Tan"nin\, n. [Cf. F. tannin.] (Chem.)
Same as {Tannic acid}, under {Tannic}.
[1913 Webster]

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单词	字典	翻译
tannin	查看　tannin　在百度字典中的解释	百度英翻中〔查看〕
tannin	查看　tannin　在Google字典中的解释	Google英翻中〔查看〕
tannin	查看　tannin　在Yahoo字典中的解释	Yahoo英翻中〔查看〕

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