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.

A deposit of fatty (and other) substances in the inner lining of an artery wall; it is characteristic of atherosclerosis.

A collection of lipids (mostly cholesterol) in the blood vessel walls surrounded by tissue. Plaque can narrow the vessels or tear, causing a clot to form, eventually blocking the vessel.

A deposit containing cholesterol that thickens the walls of the arteries or blocks the inside of the vessel.

A deposit formed by the action of bacteria on sugary foods, the cause of caries

a sticky substance that causes tooth decay, and consists of acids and bacteria or salivary substance.

A sticky, colorless film that constantly forms on your teeth. Plaque contains bacteria, which produce toxins. Plaque is the main cause of gum disease.

A build-up of matter from bacteria, food and saliva on the teeth. See also Tartar.

a scaly patch formed on the skin by psoriasis. Can be used interchangeably with "lesion."

(plak): An elevated, flat-topped lesion often described as being shaped like a plateau.

a slightly raised non-blisterform lesion which has a broad flat top like a plateau

Any elevated area of psoriasis.

The demyelinating scarring of the axons. Which comprise the bulk of the White Matter in the Central Nervous System.

An area of inflamed or demyelinated central nervous system tissue.

An area of myelin loss characteristic of multiple sclerosis.

scar in the nervous system caused by inflammation covering a large area.

A skin variation that is raised and broad. Its surface is greater than its elevation above the skin surface.

a broad, raised area on the skin

A small, flat or contoured device, usually made of metal or wood, which is inserted between the blades of a double reed as a surface to scrape against with a reed knife.

An area with a flat surface and raised edges.