crown glass definition

  • noun:
    • A soda-lime optical glass that's remarkably hard and obvious, with low refraction and reduced dispersion.
    • a kind of screen glass made by whirling a glass bubble to produce a set circular disk with a lump remaining inside center by the glass blower's rod.
    • See under Glass.
    • a number of cup, utilized for making the best possible plate or window cup, and consisting really of silicate of soda or potash and lime, with no admixture of lead; the convex half of an achromatic lens comprises crown-glass; -- so named from a crownlike form trained with undergoing blowing.
    • a beneficial top-notch common blown window-glass.
    • a glass blown into a globe that will be later flattened and spun to make a disk
    • optical cup of reduced dispersion and reasonable refractive index

Related Sources

101 votes

How would you define crown glass?

All the definitions on AZdictionary were written by people just like you. Now's your chance to add your own!