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Plaque (noun)
Any flat, ornament, or for painting pictures upon, as a dish, plate, hung upon a worn by a person, such as a brooch.
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Plaque (noun)
A piece of flat metal with writing on it, building, structure to remind people of a person or an event.
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Plaque (noun)
A clearing in a bacterial lawn caused by a virus.
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Plaque (noun)
In the Hornbostel–Sachs classification system: any flat, thin musical instrument.
“blown plaques”
“concussion plaques”
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Plaque (noun)
A broad patch of surrounding tissue, especially a broad irritated]] patch on the skin.
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Plaque (noun)
An abnormal material in or on an associated with disease.
“amyloid plaque”
“pleural plaque”
“senile plaque”
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Plaque (noun)
An accumulation in artery walls made up of macrophage cells and debris containing lipids, (cholesterol and fatty acids), calcium, and connective tissue; an atheroma.
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Plack (noun)
A coin used in the Netherlands in the 15th and 16th centuries. 15th-17th c.
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Plack (noun)
A coin issued by James III of Scotland; also a 15th-16th century Scottish coin worth four Scots pennies. from 15th c.
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Plaque (noun)
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.
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Plaque (noun)
a sticky deposit on teeth in which bacteria proliferate
“plaque around gum margins can lead to gingivitis”
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Plaque (noun)
a small, distinct, typically raised patch or region on or within the body 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.
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Plaque (noun)
a clear area in a cell culture caused by the inhibition of growth or destruction of cells by an agent such as a virus.
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Plaque (noun)
a flat counter used in gambling.
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Plack (noun)
Scottish and English regional (northern). A small billon coin issued by James III of Scotland; (also) a small copper coin current in Scotland in the 15th and 16th centuries worth four Scots pennies. Now historical.