plaque

  1. Noun.  Any flat, thin piece of metal, clay, ivory, or the like, used for ornament, or for painting pictures upon, as a slab, plate, dish, or the like, hung upon a wall; also, a smaller decoration worn on the person, as a brooch.
  2. Noun.  (uncountable) An accumulation of biofilm, or bacteria on teeth.
  3. Noun.  (uncountable, medicine) Atheroma, an accumulation in artery walls made up of macrophage cells and debris containing lipids, (cholesterol and fatty acids), calcium, and connective tissue.
  4. Noun.  (biology) A clearing in a bacterial lawn caused by a virus.

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This entry was last updated on RefTopia from its source on 3/20/2012.