gal·lo·tan·nic acid /ˌgæloˌtænɪk, ˌgɔl-/ 名詞
沒食子鞣酸,沒食子丹寧酸,棓丹寧酸
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.
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Gal·lo·tan·nic a. Chem. Pertaining to the tannin or nutgalls.
Gallotannic acid. See Tannic acid, under Tannic.
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