1. Optics. glass that has had its polished surface removed by fine grinding and that is used to diffuse light.
2. glass that has been ground into fine particles, esp. for use as an abrasive.
[ 1840-50 ]
1. Optics. glass that has had its polished surface removed by fine grinding and that is used to diffuse light.
2. glass that has been ground into fine particles, esp. for use as an abrasive.
[ 1840-50 ]
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012