ground glass

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noun

Optics. glass that has had its polished surface removed by fine grinding and that is used to diffuse light.
glass that has been ground into fine particles, especially for use as an abrasive.

Nearby words

  1. ground floor,
  2. ground floor, get in on the,
  3. ground fog,
  4. ground frost,
  5. ground game,
  6. ground hemlock,
  7. ground ice,
  8. ground itch,
  9. ground ivy,
  10. ground lamella

Origin of ground glass

First recorded in 1840–50

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for ground glass


British Dictionary definitions for ground glass

ground glass

noun

glass that has a rough surface produced by grinding, used for diffusing light
glass in the form of fine particles produced by grinding, used as an abrasive
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