plaque
(plak)
1. A clear area in a lawn of bacteria or a localized area of cell destruction in a layer of animal cells that results from the lysis of the bacteria by bacteriophages or the destruction of the animal cells by animal viruses.
2. The term also refers to dental plaque, a film of food debris, polysaccharides, and dead cells that cover the teeth. It provides a medium for the growth of bacteria (which may be considered a part of the plaque), leading to a microbial plaque ecosystem that can produce dental decay.

Microbiology. . 2009.

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  • plaque — [ plak ] n. f. • 1562; « monnaie » XVe; de plaquer 1 ♦ Matériau, élément de matière rigide, plat et peu épais. ⇒ feuille. Petite plaque. ⇒ plaquette. Plaque d ardoise, de verre (⇒ carreau) , de carton. Plaque de métal, de plastique utilisée en… …   Encyclopédie Universelle

  • plaqué — plaque [ plak ] n. f. • 1562; « monnaie » XVe; de plaquer 1 ♦ Matériau, élément de matière rigide, plat et peu épais. ⇒ feuille. Petite plaque. ⇒ plaquette. Plaque d ardoise, de verre (⇒ carreau) , de carton. Plaque de métal, de plastique… …   Encyclopédie Universelle

  • Plaque — or placque may refer to: * Commemorative plaque, a flat ornamental plate or tablet fixed to a wall, used to mark a significant event, person, etc. * Memorial plaque, issued to next of kin of dead British military personnel after WWI * Plaque, a… …   Wikipedia

  • plaqué — plaqué, ée (pla ké, kée) part. passé de plaquer. 1°   Mis par plaque. •   On dirait que c est du rouge artificiel plaqué comme le carmin des femmes de ce pays, J. J. ROUSS. Hél. II, 25.    Fig. •   De grosses louanges de moi, si maussadement… …   Dictionnaire de la Langue Française d'Émile Littré

  • Plaque — (frz. plaque [plak], „Platte; Fleck; Schild“) steht für: Zahnbelag, ein Biofilm auf den Zähnen Eine krankhafte Ablagerungen an den Blutgefäßwänden, siehe Arteriosklerose Senile Plaques, eine Ablagerung im Gehirn bei der Alzheimerschen Erkrankung… …   Deutsch Wikipedia

  • plaque — [pla:k, plæk US plæk] n [Date: 1800 1900; : French; Origin: Dutch plak, from plakken to stick ] 1.) a piece of flat metal, wood, or stone with writing on it, used as a prize in a competition or attached to a building to remind people of an event… …   Dictionary of contemporary English

  • Plaque — Plaque, n. [F. Cf. {Plack}, and see {Placard}.] 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 Collaborative International Dictionary of English

  • Plaque — [pla̱k; aus frz. plaque = Platte; Fleck] w; , s [pla̱k]: umschriebener, etwas erhöhter Hautfleck. Plaques muqueu|ses [pla̱k mükö̱s; frz. muqueux = schleimig] Mehrz.: grauweiße Papeln auf der Mundschleimhaut im zweiten Stadium der Syphillis …   Das Wörterbuch medizinischer Fachausdrücke

  • Plaque — [plak] die; , s <aus fr. plaque »Platte, Fleck«, dies aus dem Germ.>: 1. deutlich abgegrenzter, etwas erhöhter Fleck auf der Haut (Med.). 2. Zahnbelag (Zahnmed.). 3. durch Auflösung einer Gruppe benachbarter Bakterienzellen entstandenes… …   Das große Fremdwörterbuch

  • plaque — (n.) 1848, ornamental plate or tablet, from Fr. plaque, from M.Fr., metal plate, coin, perhaps through Flem. placke small coin, from M.Du. placke disk, patch, stain, related to Ger. Placken spot, patch (Cf. PLACARD (Cf. placard)). Meaning deposit …   Etymology dictionary

  • plaquê — s. m. Metal comum revestido de uma lâmina fina de ouro ou prata.   ♦ Grafia em Portugal: plaqué …   Dicionário da Língua Portuguesa

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