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crown glass

   Also found in: Encyclopedia, Wikipedia 0.01 sec.
crown glass
n.
1. A soda-lime optical glass that is exceptionally hard and clear, with low refraction and low dispersion.
2. A form of window glass made by whirling a glass bubble to make a flat circular disk with a lump left in the center by the glass blower's rod.

crown glass
n
1. (Physics / General Physics) another name for optical crown
2. (Miscellaneous Technologies / Building) an old form of window glass made by blowing a globe and spinning it until it formed a flat disc
ThesaurusLegend:  Synonyms Related Words Antonyms
Noun1.crown glass - a glass blown into a globe which is later flattened and spun to form a disk
glass - a brittle transparent solid with irregular atomic structure
2.crown glass - optical glass of low dispersion and low refractive index
optical glass - clear homogeneous glass of known refractive index; used to make lenses


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