crown glass

(Pronunciation -تلفظ سنیۓ ) US:

Slow

Normal

Noun: crown glass

1. crown glass
A glass blown into a globe which is later flattened and spun to form a disk
2. crown glass [ Synonyms: optical crown, optical crown glass]
Optical glass of low dispersion and low refractive index

Generic Words:

glass, optical glass

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