Opacity: An objects ability to transmit light. In regards to paint, an opaque paint transmits no light and allows nothing to show through from beneath it. A semi-opaque paint transmits some light and allows some of what is beneath it to show through. A transparent paint lets light in and shows what is beneath it clearly. Glazes are a good example of transparent or semi-transparent paint because they put a thin layer of color or shine over the color or substance beneath it, but they do not impede viewers seeing what is under them.
Outline Drawing: An outline drawing is created by using only the outline of a subject to depict them, with no added shading or specific features.
Paper Mâché: French for “chewed paper”, paper mâché is an easy molding technique that uses strips of paper affixed together with a flour paste. It can be used for many different types of objects and can be painted or varnished.
Pastel: A pastel is a crayon composed almost completely of pigment with a small amount of aqueous binder to hold it together.
Patina: The most common use of the word patina is used in reference to bronze or copper objects. Bronze and copper oxidize over time and with exposure to the elements, resulting in a thin greenish film forming over the surface of the object. Patina adds to the value of an object because it not only gives an impression of its age, but it also adds to the overall appearance of the piece. Patina can also refer to any mellowing of a surface due to age and use.
Perspective: Perspective is the method of taking a two-dimensional surface (or picture plane) and creating an image on it that looks three-dimensional. Artists visually place objects nearer or farther on the picture plane in relation to the horizon line and the vanishing point (or points), creating the illusion of depth. There are many different ways to express perspective and traditionally geometry is used to keep objects proportional. The most rigidly geometrically correct proportions are defined as the rules of linear perspective, which were first solidified in the 15th century by some of the era’s foremost painters and architects. A few artists of that era to successfully use these rules to create realistic depth were Albrecht Dürer and Leonardo da Vinci. See also Vanishing Point.
Pewter: A metal alloy composed almost entirely tin, with a small amount of copper and sometimes lead. Lower grades of pewter can contain a great deal of lead. Pewter is used to create tableware and other decorative objects. It is very soft and malleable, making it easy for artisans to work with.
Plein Air: In French, Plein air means, “in open air”: to paint outside.
Pointillism: Pointillism refers to a technique of painting an entire picture out of dots or small strokes. From a distance, the dots are imperceptible but close to the canvas they are easily seen. Pointillism was developed as a branch of French Impressionism. One of the most famous painters to use this technique was Georges Seurat.
Polychrome: Polychrome means multicolored. A specialized use of the word refers to the decoration of wood and stone in full color, as the Greeks and Egyptians did for some of their works of art.
Porcelain: Usually white or light gray in color, porcelain is the highest quality of ceramic ware there is. Composed of clay, feldspar and flint, it is very durable despite the fact that it can appear quite delicate, and is fired at a very high temperature. It was first produced by the Chinese during the T’ang Dynasty.
Portrait: Any likeness of a person. Traditionally it is a person depicted from the chest up, including the shoulders, neck and face. A portrait the artist creates of him or herself is called a self-portrait.
Pottery: Ceramic ware fired at a low temperature and typically fired at a much lower temperature than porcelain. See Earthenware.
Primary Color: One of the three colors that, when mixed, can create all of the other hues, tones and shades. These primary colors are red, yellow and blue.