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Hint: Question mark (?) is a wildcard. Question mark substitutes one character.
English
noun
:
tannic acid
1.
tannic acid
(substance)
any of various complex phenolic substances of plant origin; used in tanning and in medicine
Synonyms
tannin
Broader (hypernym)
phenol
Narrower (hyponym)
catechin
,
cutch
,
kutch
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