Definition of plaque in English:


Line breaks: plaque
Pronunciation: /plak
, plɑːk


1An ornamental tablet, typically of metal, porcelain, or wood, that is fixed to a wall or other surface in commemoration of a person or event.
More example sentences
  • The kick off is at 2pm where a plaque to commemorate the event will be unveiled.
  • Commemorative wall plaques and mugs in celebration of 150 years of St. Conleth's Church are available in the Parish Office.
  • The Cincfleet Admiral took the salute and unveiled a plaque to commemorate the event.
memorial tablet, plate, stone plate, metal plate, tablet, panel, sign, brass, medallion, plaquette, cartouche
2 [mass noun] A sticky deposit on teeth in which bacteria proliferate: plaque around gum margins can lead to gingivitis
More example sentences
  • Pericoronitis - an infection of the soft tissue surrounding the tooth, caused by a build of plaque (a sticky white substance that contains bacteria).
  • Salivary bicarbonate can help protect teeth against attack from acids produced by bacteria in dental plaque.
  • Tooth decay is caused by the bacteria in dental plaque breaking down sugar in the foods and drinks that you eat and drink.
3 Medicine 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.
More example sentences
  • Atherosclerosis, which develops as fatty plaques within arterial walls, underlies both heart attack and stroke.
  • To understand how atherosclerotic plaques become deposited in arteries it is necessary to understand how the highly insoluble cholesterol is moved about the body.
  • High blood cholesterol can lead to deposits of plaques, which narrow your arteries and increase your risk of heart attack and stroke.
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.
More example sentences
  • Progeny phage that produced clear plaques in the presence of IPTG and X-gal were analyzed by a differential oligonucleotide hybridization technique, as reported.
  • The comparative analysis of the degree of pathogenecity among Indian isolates of WNV in mice, and their plaque size in cell culture were studied 30.
  • The activated PS2-containing integrins are clustered in basal plaques on each cell, but the PS1-containing heterodimers are not.
4A flat counter used in gambling.
More example sentences
  • As cards are dealt, the plaque displays an updated card value total.


mid 19th century: from French, from Dutch plak 'tablet', from plakken 'to stick'.



Pronunciation: /plaˈkɛt/
More example sentences
  • A series of religious Italian Renaissance plaquettes worth about £500,000 have been stolen from the Victoria & Albert Museum.
  • Small bronze statuettes and plaquettes and portrait medallions are just a few examples of what one would have found in their studioli.
  • At Sotheby's in London on 21 April, the firm's associate specialist coins and medals auctioneers Morton & Eden is offering a choice group of fifty-three renaissance medals and plaquettes from the collection of the late John R. Gaines.

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having an extremely offensive smell