"tannic acid, vegetable substance capable of converting animal hide to leather," 1802, from French tannin (1798), from tan "crushed oak bark containing tannin" (see tan (v.)). Tannic acid first recorded 1836, from French acide tannique, inroduced 1834 by French chemist Théophile-Jules Pelouze (1807-1867).
例文
1. The risin and tannin that can be extracted from it are sought by the chemical industry.
から抽出されるロジンとタンニンは化学工業上非常に必要である。
2. Tannin inclusions in vacuoles have also been demonstrated by the electron microscope.
液泡中のタンニン内包物も顕微鏡で確認されている。
3.Full-bodied a solid，good tannin structure and apersistent aftertaste.
酒は体がふっくらしていて、単寧は丈夫で精緻で、後味が長持ちする。
4.To convert（hide）into leather，as by treating with tannin .
タンニン酸で処理するなど、（生皮）を革に変更します。
5.Astringent：Mouth-puckering sensation；the result of tannin being present in the wine.