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plate glass

noun
1.
a soda-lime-silica glass formed by rolling the hot glass into a plate that is subsequently ground and polished, used in large windows, mirrors, etc.
Origin
1720-1730
1720-30
Related forms
plate-glass, plateglass, adjective
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for plate glass'

plate glass

noun
1.
glass formed into a thin sheet by rolling, used for windows
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Encyclopedia Article for plate glass'

plate glass

form of glass originally made by casting and rolling and characterized by its excellent surface produced by grinding and polishing. Plate glass was first made in the 17th century in France, after which several improvements in the original batch technique culminated in the Bicheroux process (1918), in which the glass was received by power-driven rollers that then delivered it in thinner sheets of greater length to be sheared into sections and annealed (heated, then cooled, to make it less brittle). A continuous process was then developed in which the glass passed through the annealing stage before being cut into lengths, ground, and polished.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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