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breakaway glass
sugar glass
A brittle transparent form of sugar used to simulate glass in films and plays.
sea glass
Rounded glass pebbles originating from glassware products that were lost at sea and broken up, which are found on beaches and have been rounded and aged through the action of surf.
glass sponges
plural of glass sponge
lead glass
Glass containing lead oxide, used for its high refractive index (often in cut glass) or for its ability to block ionizing radiation.
object glass
objective (part of a microscope, telescope, etc.)
Bohemian glass
A variety of hard glass of fine quality, made in Bohemia. It is of variable composition, containing usually silica, lime, and potash, rarely soda, but no lead. It is often remarkable for beauty of colour.
show glass
glass silk
Fine threads of glass, wound, when in fusion, on rapidly rotating heated cylinders.