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watch glass

 - 2 dictionary results
watch glass  
n.  
  1. A shallow glass dish used as a beaker cover or evaporating surface.

  2. A concavo-convex glass or plastic disk used to cover the face of a watch.

The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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watch glass

noun
1. laboratory glassware; a shallow glass dish used as an evaporating surface or to cover a beaker 
2. a protective cover that protects the face of a watch [syn: crystal
WordNet® 3.0, © 2006 by Princeton University.
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