lead glass

lead glass

[led]
noun
glass containing lead oxide.

Origin:
1855–60

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World English Dictionary
lead glass (lɛd)
 
n
glass that contains lead oxide as a flux

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Encyclopedia Britannica
Encyclopedia

lead glass

heavy and durable glass characterized by its brilliance, clarity, and highly refractive quality. Developed by George Ravenscroft (q.v.) in 1675, it ushered in a new style in glassmaking and eventually made England the leading glass producer of the world. Ravenscroft's experimentation was supported by the Worshipful Company of Glass Sellers, a body of English retailers long dissatisfied with the quality of glass from Isola (island) di Murano, Venice

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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