crown glass

  1. an optical glass of low dispersion and generally low index of refraction.

  2. 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 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use crown glass in a sentence

British Dictionary definitions for crown glass

crown glass

  1. another name for optical crown

  2. an old form of window glass made by blowing a globe and spinning it until it formed a flat disc

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012