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ground glass

noun
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, especially for use as an abrasive.
Origin of ground glass
1840-1850
First recorded in 1840-50
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for ground glass
Contemporary Examples
Historical Examples
  • "I'd like a nice saucerful of ground glass," laughed one of the girls.

    Pee-wee Harris Percy Keese Fitzhugh
  • "Yes, but what we'd like most of all is the ground glass," said another girl.

    Pee-wee Harris Percy Keese Fitzhugh
  • It will be more distinct if the ground glass be shaded from the light.

  • By-and-by daylight came like a glow in a ground glass globe.

    Lord Jim Joseph Conrad
  • Then you can easily trace from these copies through the ground glass.

  • In the ground glass the police commissioner's face grew purple.

    Empire Clifford Donald Simak
  • On dull days the tissue paper or ground glass may be omitted.

  • There is a perfect image of an object on the ground glass of a camera.

    Physics Willis Eugene Tower
  • The ground glass should be marked for the size picture to be taken.

British Dictionary definitions for ground glass

ground glass

noun
1.
glass that has a rough surface produced by grinding, used for diffusing light
2.
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
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8
11
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