tannins defined in 1951 yeartannins - tannins;
tannins - Group of astringent substances of wide occurrence in plants, dissolved in cell-sap; particularly common in the bark of trees, unripe fruits, leaves, and galls. Complex organic compounds containing phenols, hydroxy acids, or glucosides. Function in plant not known with certainty. Used in production of ink and leather.
near tannins in Knolik
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