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plaque

From Wiktionary

Pronunciation

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Noun

[change]

Singular
plaque

Plural
plaques

  1. (countable) A plaque is a piece of flat metal with words on it, and is attached to a building or monument so as to remind people of a person or an event.
  2. (uncountable) (dentistry) Plaque is an accumulation of bacteria on teeth that may develop into dental calculus.
  3. (countable) (pathology) A plaque is a wide patch of abnormal tissue that is distinguishable from its surrounding.