| 单词 | plaque |
| 释义 | plaque /plak/, n. 1. a thin, flat plate or tablet of metal, porcelain, etc., intended for ornament, as on a wall, or set in a piece of furniture. 2. an inscribed commemorative tablet, usually of metal placed on a building, monument, or the like. 3. a platelike brooch or ornament, esp. one worn as the badge of an honorary order. 4. Anat. , Pathol. a flat, often raised, patch on the skin or other organ, as on the inner lining of arterial walls in atherosclerosis. 5. Dentistry. a soft, sticky, whitish matlike film attached to tooth surfaces, formed largely by the growth of bacteria that colonize the teeth. 6. Bacteriol. a cleared region in a bacterial culture, resulting from lysis of bacteria by bacteriophages. [1840-50; < F, n. deriv. of plaquer to plate < MD placken to patch; cf. PLACKET] |
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