A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Undercutting: The technique of decorating glass in high relief by cutting away part of the glass between the body of an object and its decoration (e.g., on a cage cup).
Uranium Glass: Glass colored with uranium oxide. This brilliant yellow-green glass was first made in the 1830s.
Vase Cap: Decorative or plain brass pieces used to finish off the tops of lamps and also to provide a method of supporting them.
Venetian Glass or Tiles: Translucent glass mosaic tiles imported from Italy. Commonly found as 3/8" or 3/4" squares.
Viscosity: The quality or state of being viscous; the physical property of a liquid or semi liquid that enables it to develop and maintain a certain amount of shearing stress dependent upon the velocity of flow and then to offer continued resistance to flow.
Vitreous Paint: A mixture of ground glass and metallic oxides used to paint on glass.
Water Glass: Glass texture made by Spectrum Glass where the surface and light pattern created resemble faint ripples on water.
Weathering: Changes on the surface of glass caused by chemical reaction with the environment. Weathering usually involves the leaching of alkali from the glass by water, leaving behind siliceous weathering products that are often laminar.
West End: The west or entrance end of the church is the people's area. Usually the large west wall has the rose window. It is not necessarily compass west.
Wheel Engraving: A process of decorating the surface of glass by the grinding action of a wheel, using disks of various sizes and materials (usually copper, but sometimes stone). An abrasive in a grease or slurry is applied to a wheel, as the engraver holds the object against the underside of the rotating wheel.
White Glass: Term often misused for clear glass.
Whiting: Powder of calcium carbonate used in the cementing process of leaded glass windows to absorb the cement oils, help set, clean, and polish the window.
Williamite Glass: A 17th-century English drinking vessel engraved with a toast, a symbol (an orange tree, for example), or a motto supporting King William III, or with his portrait.
Window Glass: Generalized term for clear double strength glass used in windows.
Whipping: Action of fanning the paint with a badger (brush) when painting on glass.
Wispy: Cathedral glass containing white cloud-like
streaks.
The sources for this material include:
•Glass: A Pocket Dictionary of Terms Commonly Used to Describe Glass and Glassmaking.
Compiled by David Whitehouse, 88 pp., 47 illus., 1993
•How to Work in Stained Glass. Anita & Seymour Isenberg, 247 pp., 1972
•Stained Glass Lamps. Anita & Seymour Isenberg, 222 pp., 1972
•The Techniques of Stained Glass. Partrick Reyntiens, 168 pp. 1977
•The Coming Museum Website: www.cmog.org
• The Stained Glass Association of America Website: www.stainedglass.org
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