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[noun] -- a hard, brittle, noncrystalline, more or less transparent substance produced by fusion, usually consisting of mutually dissolved silica and silicates that also contain soda and lime, as in the ordinary variety used for windows and bottles.
[recycl-onym] -- glass can be made indefinitely into more glass products, like bottles and, being safe and inert, it is often used as an aggregate for irrigation, road beds, foundations, etc.
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