Crown glass Meaning, Definition & Usage
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noun a glass blown into a globe which is later flattened and spun to form a disk
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noun optical glass of low dispersion and low refractive index
optical crown; optical crown glass.
WordNet
Definitions
- . See under
Glass .
Definitions
- a variety of glass, used for making the finest plate or window glass, and consisting essentially of silicate of soda or potash and lime, with no admixture of lead; the convex half of an achromatic lens is composed of crown glass; so called from a crownlike shape given it in the process of blowing.
