ETYM French Cf. Plack, and see Placard.
Any abnormal deposit on a body surface, especially the thin, transparent film of sticky protein (called mucin) and bacteria on tooth surfaces. If not removed, this film forms tartar (calculus), promotes tooth decay, and leads to gum disease. Another form of plaque is a deposit of fatty or fibrous material in the walls of blood vessels causing atheroma.
A small abnormal patch on or inside the body. + prikaži više