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(glas) [AS., glees]. 1. A brittle, hard, transparent substance, consisting usually of the fused amorphous silicates of potassium and calcium, or sodium and calcium, with an excess of silica. 2. Any article made of glass. G., Crown-, a very hard glass, is a silicate of sodium and calcium. G., Flint-, that composed of lead and potassium silicates.
G., Soluble, potassium or sodium silicate, used as a substitute for plaster-of-paris
G.-Wool, white, silky threads obtained by the action of a powerful blast on a falling stream of molten glass; it is used in draining wounds and in filtering strong acids and alkalis. Syn., Slag-wool