plaque

[plak]

noun

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, especially one worn as the badge of an honorary order.

4. Anatomy, Pathology.,  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. Bacteriology.,  a cleared region in a bacterial culture, resulting from lysis of bacteria by bacteriophages.

plaque

/ plæk, plɑːk /

noun

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

plaque

1. A small disk-shaped formation or growth; a patch.

2. A film of mucus and bacteria on the surface of the teeth.

3. A deposit of material in a bodily tissue or organ, especially one of the fatty deposits that collect on the inner lining of an artery wall in atherosclerosis or one of the amyloid deposits that accumulate in the brain in Alzheimer's disease.

plaque

1. 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.

Word History and Origins

Origin of plaque¹

1840–50; < French, noun derivative of plaquer to plate < Middle Dutch placken to patch; placket

Word History and Origins

Origin of plaque¹

C19: from French, from plaquier to plate, from Middle Dutch placken to beat (metal) into a thin plate

Example Sentences

They moved from portrait to portrait; at each one, Simon read aloud from the accompanying plaque.

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They concluded that while anti-amyloid drugs like lecanemab can lower plaque levels and slow cognitive decline, they may not be enough to restore lost brain function.

Read more on Science Daily

At the foot of the village's war memorial there is a commemorative plaque in his memory - something that was done across the country for all winners of the VC.

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Perhaps the most special item is a trunk covered in the Millefiori motif with a plaque that reads “Beverly Hills.”

Read more on Los Angeles Times

These specialized microglia also slow the buildup of amyloid plaques and the spread of toxic tau proteins, which are both major hallmarks of Alzheimer's.

Read more on Science Daily

Related Words

• badge 
• decoration 
• medal 
• nameplate 
• plate 
• slab