3 definitions found
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
Tannic \Tan"nic\, a.
Of or pertaining to tan; derived from or resembling, tan;
as tannic acid.
{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
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
Tannin \Tan"nin\, n. [Cf. F. tannin.] (Chem.)
Same as {Tannic acid}, under {Tannic}.
From WordNet r 1.6 [wn]:
tannin
n : any of various complex phenolic substances of plant origin;
used in tanning and in medicine [syn: {tannic acid}]
more about tannin
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