|plaque (plæk, plɑːk)|
|1.||an ornamental or commemorative inscribed tablet or plate of porcelain, wood, etc|
|2.||a small flat brooch or badge, as of a club, etc|
|3.||pathol any small abnormal patch on or within the body, such as the typical lesion of psoriasis|
|4.||short for dental plaque|
|5.||bacteriol a clear area within a bacterial or tissue culture caused by localized destruction of the cells by a bacteriophage or other virus|
|[C19: from French, from plaquier to plate, from Middle Dutch placken to beat (metal) into a thin plate]|
A small disk-shaped formation or growth; a patch.
A deposit of fatty material on the inner lining of an arterial wall, characteristic of atherosclerosis.
A scaly patch formed on the skin by psoriasis.
A sharply defined zone of demyelination characteristic of multiple sclerosis.
|plaque (plāk) Pronunciation Key
A thin film composed of bacteria, mucus, and food particles that forms on the surfaces of teeth. Plaque contributes to tooth decay and gum disease. Plaque also refers to a combination of cholesterol and lipids that can accumulate on the inside of arteries, causing atherosclerosis.