Glossary

Word of the Day!

carrageenan


Sold in a powdered form, this seaweed-based material is used to size paper before marbling to keep the colors from running and bleeding, or used as a bath to float marbling colors on. It is also referred to as Irish moss.


g

Abbreviation for gram.

jump to top of page

gable

The triangular space on a building formed by the two angles of a pitched roof. Gables are integral elements in Queen Ann style and 17th-century Dutch domestic architecture.

jump to top of page

gal.

Abbreviation for gallon.

jump to top of page

gallon

A unit of liquid measurement (US) equal to four quarts, or to eight pints, or to 128 fluid ounces. To convert gallons into liters, multiply them by 3.7854. Abbreviated gal.

jump to top of page

galvanized

Galvanizing is a process by which steel is coated with zinc to prevent rusting. Painting on galvanized steel requires a special primer.

jump to top of page

gargoyle

A carved stone architectural element which serves as a waterspout on the wall of a building. Gargoyles are shaped as grotesque monsters or beasts, and were particularly popular on Gothic cathedrals.

Example: Chartes Cathedral, Chartes, France, begun c. 1145

jump to top of page

gauge

To measure; or, a certain unit of measure. Often refers either to a device used to measure the thickness of sheet metal or thickness of wire, or to the thickness of sheet metal or wire expressed in terms of a standard system. (pr. gayj)

jump to top of page

G-clamp

A rounded metal clamp, used to squeeze materials together by adjusting a screw thread, as when drilling, sawing, or gluing.

See Also:  adhesives

jump to top of page

gelatin

A material made from animal glue which is flexible when warm and can be used for mold-making. Gelatin has largely been supplanted for such uses by latex, silicones and polyurethanes.

See Also:  adhesives

jump to top of page

gesso

Plaster or a fine plaster-like material made of gypsum, which is also called whiting, used for sculptures. An especially versatile medium in reliefs, gesso can be either the material cast in a mold or the material of a mold, a material to be modeled, or carved, or attached to something else. When used for mold into which molten metal is poured, it must be hardened with sand as a grog. Gesso may also refer to such a gypsum material mixed with an animal-hide glue and used as a ground for painting. For this latter use, it is usually applied to the surface of a wood panel or sculpture to become the surface on which an artist paints. Used by Gothic and Renaissance panel painters, and used today. Like all other dusts, airborne gesso is hazardous to breath-- every user must wear an appropriate face-mask. (pr. jes'soh)

jump to top of page

gilding

The practice of applying a thin coat of gold to a painting, sculpture, or piece of furniture. Gilding was heavily used in the work of Late Gothic Italian painters. These artists depicted, among other things, the halos of angels in gold, emphasizing the decorative surface of the panels.

Example: Duccio's Virgin and Child Enthroned with Saints, 1308-1311

See Also:  fire gildingoil gildingwater gilding

jump to top of page

gilt

Describes a surface given a coating of gold, usually either gold leaf or gold plate.

jump to top of page

glare

A strong or annoying and unwanted light, such as reflected from glass covering a picture. Also, a garishness or gaudiness; something overly conspicuous or obtrusive.

jump to top of page

glass

A hard material made of silicates and an alkali fused with other substances. It is brittle, transparent or translucent, and considered to be a supercooled liquid rather than a true solid. It solidifies from a molten state, in an amorphous rather than a crystalline structure. Oxides fused within or upon molten glass can produce brilliant colors. In prehistoric times objects were carved from natural glass such as obsidian and rock crystal. The earliest known manufactured glass is from Egypt, c. 2000 B.C. Much was produced by the artisans of the Roman empire. Following the fall of Rome, however, there was very little glass manufactured in Europe until the 10th century, when stained glass appeared. As in ancient times, glassmakers fuse their materials at high temperatures in fireclay containers. Then the molten glass is boiled, skimmed, and cooled several degrees so that it can be ladled or poured into molds and pressed, or blown, or drawn. In its final shape, the glass is annealed to relieve stresses caused by manipulation, then slowly cooled.

jump to top of page

glass fiber

A light but durable sculpture material used to reinforce resin, and hollow cast concrete. Thin filaments of glass are bonded into thin, flexible sheets called mats, strips of tape, or a fine, loosely stranded rope known as roving.

See Also:  fiberglass

jump to top of page

glaze

A term used in ceramics to describe a thin coating of minerals which produces a glassy transparent or colored coating on bisqueware. The glaze is fixed by baking the bisqueware in a kiln. This makes the surface smooth, shiny, and waterproof. Also, a glaze can be a thin, translucent or transparent coat over a painting, sometimes meant simply to protect the paint underneath, but more often to add a veil of coloration to an area of a picture.

jump to top of page

glazier

A person who cuts and fits glass, as in the art of stained glass.

jump to top of page

glitter

Sparkle. Also, small pieces of light-reflecting decorative material. And, by extension, superficial attractiveness.

jump to top of page

glossy

Surfaces which are lustrous, shiny, extra smooth. For example, satin, polished metals, and typical glass surfaces are glossy, whereas rougher surfaces, fabrics, etc., are more matte or dull. Sometimes used to refer to superficiality.

jump to top of page

glue

Adhesive.

jump to top of page

glue size

Size crystals or powder mixed with water form a gelatinous solution which forms the binder for gesso. Glue size added to plaster retards the drying process, giving the plaster a longer working time.

jump to top of page

gold leaf

An extremely thin foil made of gold. It is available in various colors, each with a different proportion of copper or other metal in the alloy. Leaf made of less expensive materials to resemble gold is sometimes referred to as gold leaf. Something to which gold leaf has been applied may be described as gilt.

jump to top of page

goo

A creamy paste of cement mixed with water. Goo is the first coat applied to a mold in making a hollow cast concrete sculpture, and forms an even surface layer for the finished cast. Goo is also a brand name for a certain hand cleaning product.

jump to top of page

gouache

A heavy, opaque watercolor paint, sometimes called body color, producing a less wet-appearing and more strongly colored picture than ordinary watercolor. Also, any painting produced with gouache. (pr. gwahsh)

jump to top of page

gouge

A beveled chisel with a rounded, trough-like cutting edge, generally for carving wood. There are numerous types of gouges, including a V-tool for engraving the surface of wood. Many gouges are designed to be pushed by hand rather than by the hit of a mallet. To gouge is to make a scooping or digging action, as with such a chisel.

jump to top of page

gradated wash

A wash that is light or thin in an area where little color has been applied, and gradually becomes darker or heavier into another area, where more color has been applied. A painting technique typically used with watercolors and inks, but possible with any thinned pigments.

See Also:  gradation

jump to top of page

gradation

A gradual, smooth, step-by-step change from dark to light values or from large to small shapes, or rough to smooth textures, or one color to another.

jump to top of page

graffiti

A drawing or an inscription made on a wall or other surface, usually so as to be seen by the public. Generally regarded as vandalism-- defacing public or private property-- and illegal; it may also be regarded as a form of art.

Example: Jean-Michel Basquiat's Zydeco, 1984

jump to top of page

graffito

A method in which a line is produced by scratching through one pigmented surface to reveal another.

jump to top of page

gram

A unit of weight measurement equal to 0.001 kilogram. To convert grams into ounces (US), multiply them by 0.03527. Abbreviated g.

See Also:  kilogram

jump to top of page

granite

A hard, coarse-grained igneous rock largely consisting of mica, and quartz. It has been used for sculpture, monuments, and architecture by several civilizations. The name granite is sometimes used loosely to include related igneous rocks such as granodiorite.

jump to top of page

granulate

A material which is rough and grainy. Or, to make a material rough and grainy. (pr. gran"yeh-layt')

See Also:  abrasivetexture

jump to top of page

graph

A diagram that exhibits a relationship, often functional, between two sets of numbers as a set of points having coordinates determined by the relationship. Also called plot. Pictorial types of graphs include the pie chart and the bar graph, often used to express the relationships between quantities, volumes, degrees, etc.

jump to top of page

graphic arts (or graphic design)

Visual arts that are linear in character, such as drawing and engraving. Also, art involving printing and printmaking, much of it for commercial purposes-- for such things as packaging, advertisements, signage, books and magazines.

jump to top of page

graphics

The arts which include illustrations, diagrams, or designs which are used for printed or commercial materials. This art emerged in the late 19th century with the development of advertising. Pop artists used the power of strong, graphic images in their paintings.

Example: Andy Warhol's Soup Can, 1961-2

jump to top of page

graver

A tool used in engraving metal, wood, or stone. A knob-like wooden handle which holds a metal shaft having a sharp beveled point with one size of several possible shapes, either flat, round, multiple, or elliptical. It is generally designed to be pushed by the hand, although there is an electrical tool often called a graver, which has a rotating tip. Another name for graver is burin. Graver may also refer to the technique or style of an engraver's work.

jump to top of page

gravure

French for engraving. There are several types of engraving, including copper-plate and wood-engraving, rotogravure and photogravure. In English, gravure has been used broadly to cover any or all of these several types. In the nineteenth and twentieth centuries, prints have been referred to as "art gravures" in order to distinguish them as art prints, rather than as merely commercial-grade prints. The line drawn between the two is a relatively subjective one. Seeing this term ON a print should raise suspicion that it is part of a huge edition, and/or for a relatively mass audience.

jump to top of page

gray scale

The range of neutral values, or shades of gray in an image. The gray scales of scanners and terminals are determined by the number of grays, or steps between black and white, that they can recognize and reproduce.

jump to top of page

green wood

Lumber that is not fully dried.

jump to top of page

greenware

Generally refers to unfired pottery, although sometimes the term is used to specify Chinese stoneware with a high-fired green glaze.

See Also:  bone dryleather-hard

jump to top of page

grid

A framework or pattern of crisscrossed or parallel lines. When crisscrossed, lines are usually horizontal and vertical; and when lines are diagonal, they are usually at right angles to each other. Typically graph paper is a grid of lines. Things which are often gridded: tiles, tessellations, wire screens, chess boards, maps, charts, calendars, and modern street plans.

jump to top of page

grind

To crush, pulverize, or reduce to powder by friction, especially by rubbing between two hard surfaces. Or, to shape or refine with friction. [For grinding to occur, bumping is required.]

See Also:  abrasive

jump to top of page

grisaille

A style of monochromatic painting in shades of gray, used especially for the representation of relief sculpture, or to simulate one. Achromatic painting. May refer to a gray underpainting, laid for subsequent color glazing. Also, a kind of paint which can be fired onto glass. (pr. greez-eye', or griz-eye')

Example: The Vices and Virtues of Giotto's fresco cycle at the Cappella dei Scrovegni, Padova, Italy, c. 1305

jump to top of page

grog

Clay which has been fired and ground into fine granules, used as an ingredient in a clay body or as a base on which clay is worked or fired which allows the form to contract freely as it dries. It may also be used for molds and cores and for objects cast and modeled. When added to clay it raises its firing temperature and makes it more stable, but it can also alter its appearance. Sometimes sand is used as a substitute.

jump to top of page

grotesque

Ornamental images intended for architecture. These Ancient Roman motifs were discovered in underground ruins, or grottos. Often they depict animals, monsters, and figures.

Example: Lukas Kilian's Neus Gradesco Buchlein, 1607

jump to top of page

ground

A surface to which paint is applied or the material used to create that surface. A painting's ground is usually specially prepared on its support. Traditionally, for oil paint on canvas use a ground of oil and white pigment and on wood surfaces either an oil ground or gesso. Within a picture, ground may refer to a surrounding or background area. Also, in etching, it's an acid-resistant compound through which a design is drawn.

Example: Sam Francis often painted on ungrounded canvas.

jump to top of page

grout

A paste cement or mortar used for filling and sealing gaps-- cracks, crevices and joints-- especially between tiles.

jump to top of page

guilds

A group of artists, craftsmen, and tradesmen from the medieval period. The guilds were structured with layers of apprentices, journeymen, and masters.

Example: The competition for the doors of the Florentine baptistery was supported by the wool finisher's guild.

jump to top of page

gum arabic (or gum acacia)

Hardened sap secreted by acacia trees, used as a binder for water-soluble pigments. Water-soluble gums, used as adhesive in glaze or colors.

jump to top of page

gypsum

Calcium sulfate dihydrate, found in a variety of forms as natural deposits (such as alabaster), which when heated and deprived of its moisture forms the substance known as plaster of Paris. Gypsum rates an index of 2 on Mohs Scale of Hardness. (pr. jip'sum)

jump to top of page
Latest Product Reviews
I wrote a review before seeing a video, which demonstrated how to open the luminaries so they could stand. Now I love them! I just wish the instructions had been clearer. You have to spread the bottom seam so the plastic piece inside can push the sides apart. I love that the candles light up when they touch the water, and turn off when removed from the water.
- MaryAnn R in Phila
Great product and excellent customer service.
- Pam Griner in Aberdeen, NC
I have about 8 of the colors listed and I Love the colors. I keep buying more colors to add. I like the feel and consistency of the paint, the permanent bright touches of colors adds Happy to my outdoors.
- VL Mills in So. FL
Free Download for Kids

Download free coloring book pages Download FREE coloring
book pages to color at
home or school.

View Pages »