HyperDic: optical_crown_glass

English > 1 sense of the expression optical crown glass:
NOUNsubstanceoptical crown glass, optical crown, crown glassoptical glass of low dispersion and low refractive index
English > optical crown glass: 1 sense > noun 1, substance
Meaningoptical glass of low dispersion and low refractive index.
Synonymsoptical crown, crown glass
Broaderoptical glassClear homogeneous glass of known refractive index

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