crown glass

1. 1.

   a glass blown into a globe which is later flattened and spun to form a disk

   Broaderglass
2. 2.

   optical glass of low dispersion and low refractive index

   Synonymsoptical crownoptical crown glass

   Broaderoptical glass

Questions about crown glass

What does crown glass mean?

crown glass means "a glass blown into a globe which is later flattened and spun to form a disk". That is the primary sense; the word has 2 in total, listed in full on this page.