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| 单词 | tartar |
| 释义 | tar·tar (tärtər)n. 1. Dentistry A hard yellowish deposit on the teeth, consisting of organic secretions and food particles deposited in various salts, such as calcium carbonate. Also called calculus. 2. A reddish acid compound, chiefly potassium bitartrate, found in the juice of grapes and deposited on the sides of casks during winemaking. [Middle English tartre, potassium bitartrate, from Old French, from Medieval Latin tartarum, argol, from Medieval Greek tartaron.] |
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