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 gallotannic acid 添加此单词到默认生词本
【化】 (┢)单宁酸; 鞣酸
【医】 没食子鞣酸




    Gallotannic \Gal`lo*tan"nic\, a. [Gall nutgall + tannic.]
    (Chem.)
    Pertaining to the tannin or nutgalls.

    {Gallotannic acid}. See {Tannic acid}, under {Tannic}.

    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.

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