optical flint
n
(Physics / General Physics) an optical glass of high dispersion and high refractive index containing lead oxide. They are used in the manufacture of lenses, artificial gems, and cut glass Also called flint glass
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| Noun | 1. |  optical flint - optical glass of high dispersion and high refractive indexoptical glass - clear homogeneous glass of known refractive index; used to make lenses |
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