crown glass
noun
an optical glass of low dispersion and generally low index of refraction.
an old form of window glass formed by blowing a globe and whirling it into a disk.
Origin of crown glass
First recorded in 1700–10
Words nearby crown glass
crown daisy,
crown derby,
crown ether,
crown fire,
crown gall,
crown glass,
crown graft,
crown green,
crown imperial,
crown jewels,
crown land
Example sentences from the Web for crown glass
Crown-glass was easy to work, but flaked off in rather short pieces.
Cruise of the 'Alert' |R. W. CoppingerTheir materials are those used in the crown-glass manufacture.
A Dictionary of Arts, Manufactures and Mines |Andrew UreSuch a mixture will produce a dull metal, very attractive of moisture: defects to which the French crown-glass also is subject.
A Dictionary of Arts, Manufactures and Mines |Andrew Ure
British Dictionary definitions for crown glass
crown glass
noun
another name for optical crown
an old form of window glass made by blowing a globe and spinning it until it formed a flat disc