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| tar·tar [ trtər ] |
noun |
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| Definition: |
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1. hard deposit on teeth: a hard deposit of mostly organic material that forms on teeth at the gum line and contributes to dental decay if not regularly removed
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2. substance deposited in wine casks: a substance consisting mostly of potassium bitartrate that is deposited in wine casks during fermentation
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| [14th century. Via medieval Latin tartarum< medieval Greek tartaron] |
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 tar·tar·ous adjective |
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