plaque

noun
\ ˈplak How to pronounce plaque (audio) \

Definition of plaque

1a : an ornamental brooch especially : the badge of an honorary order
b : a flat thin piece (as of metal) used for decoration
c : a commemorative or identifying inscribed tablet
2a : a localized abnormal patch on a body part or surface
b : a sticky usually colorless film on teeth that is formed by and harbors bacteria
c : an atherosclerotic lesion
d : a histopathologic lesion of brain tissue that is characteristic of Alzheimer's disease and consists of a dense proteinaceous core composed primarily of beta-amyloid that is often surrounded and infiltrated by a cluster of degenerating axons and dendrites
3 : a clear area in a bacterial culture produced by viral destruction of cells

Examples of plaque in a Sentence

A bronze plaque marked the city's oldest building. They gave him a plaque in honor of his 30 years of service. Brushing your teeth prevents the buildup of plaque. The scientists are studying the way the plaques form.
Recent Examples on the Web Each will be presented with a plaque at the 2022 APSE Summer Conference banquet in Indianapolis on June 18. IndyStar placed in the top 10 in eight writing and photo categories and all three section categories. Nat Newell, The Indianapolis Star, 6 May 2022 Certainly not Mitchell or Wilbur Jackson, the first two Black players in Alabama football history who are now honored with a plaque unveiled before Saturday’s A-Day Game. Michael Casagrande | Mcasagrande@al.com, al, 16 Apr. 2022 Damian Lillard also appeared to present Schonely with a plaque honoring him. oregonlive, 10 Apr. 2022 Last week, the City Council accepted an offer from the owners of a nearby cattle farm to move the cabin there and to honor Ms. Williams with a plaque. New York Times, 4 Apr. 2022 Alabama held a ceremony to honor Fluff with a plaque on the back of his seat, which will now be where the Crimson Chaos president sits each year. Los Angeles Times, 17 Mar. 2022 Dolan presented the team with a resolution plaque, honoring the Tigers as the 2021 state champions. Ed Wittenberg, cleveland, 17 Mar. 2022 On the occasion of the 60th anniversary of the founding of the Cannes Film Festival, she was presented with a plaque recognizing her for her many years of journalistic activities. Leo Barraclough, Variety, 11 Mar. 2022 Before the game, GCU coach Bryce Drew was presented with a plaque honoring his 200th career win, an 85-64 win at Chicago State. Arizona Republic, The Arizona Republic, 27 Feb. 2022 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'plaque.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of plaque

1845, in the meaning defined at sense 1a

History and Etymology for plaque

French, from Middle French, metal sheet, from plaquer to plate, from Middle Dutch placken to piece, patch; akin to Middle Dutch placke piece, Middle High German placke patch

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Dictionary Entries Near plaque

plappart

plaque

plaquette

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Statistics for plaque

Last Updated

14 May 2022

Cite this Entry

“Plaque.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/plaque. Accessed 16 May. 2022.

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More Definitions for plaque

plaque

noun
\ ˈplak How to pronounce plaque (audio) \

Kids Definition of plaque

1 : a flat thin piece (as of metal) with writing on it that serves as a memorial of something
2 : a sticky usually colorless thin film on the teeth that is formed by and contains bacteria

plaque

noun
variants: also placque \ ˈplak How to pronounce plaque (audio) \

Medical Definition of plaque

1a : a localized abnormal patch on a body part or surface and especially on the skin psoriatic plaque
b : a sticky usually colorless film on teeth that is formed by and harbors bacteria
c : an atherosclerotic lesion
d : a histopathologic lesion of brain tissue that is characteristic of Alzheimer's disease and consists of a dense proteinaceous core composed primarily of beta-amyloid that is often surrounded and infiltrated by a cluster of degenerating axons and dendrites

called also senile plaque

2 : a visibly distinct and especially a clear or opaque area in a bacterial culture produced by damage to or destruction of cells by a virus

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