Found 1 items, similar to crystal glass.
English → English (gcide) Definition: crystal glass Flint glass \Flint" glass`\ (Chem.) A soft, heavy, brilliant glass, consisting essentially of a silicate of lead and potassium. It is used for tableware, and for optical instruments, as prisms, its density giving a high degree of dispersive power; -- so called, because formerly the silica was obtained from pulverized flints. Called also crystal glass. Cf. Glass. [1913 Webster] Note: The concave or diverging half on an achromatic lens is usually made of flint glass. [1913 Webster]