tannic
a . 丹宁的,得自鞣革的
丹宁的,得自鞣革的
tannic adj 1 :
derived from tannin 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 ]
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