plaque
/plɑːk/noun
1
- an ornamental tablet, typically of metal, porcelain, or wood, that is fixed to a wall or other surface in commemoration of a person or event（尤指金属、陶瓷或木质的固定在墙上或其他平面上以纪念某人或某事件的）饰板, 匾。
1.1
- a flat counter used in gambling（用于赌博的扁平）筹码。
2
- mass noun a sticky deposit on teeth in which bacteria proliferate齿菌斑。
3
- Medicine a small, distinct, typically raised patch or region resulting from local damage or deposition of material, such as a fatty deposit on an artery wall in atherosclerosis or a site of localized damage of brain tissue in Alzheimer's disease【医】斑（块）。
3.1
- Microbiology a clear area in a cell culture caused by the inhibition of growth or destruction of cells by an agent such as a virus【微生物】空斑; 噬斑。
派生词
plaquette
/plæˈket/ noun词源
mid 19th cent.: from French， from Dutch plak 'tablet'， from plakken 'to stick'.