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crown glass definition

crown glass

  1. window glass made in flat, circular plates by blowing and whirling, with a small knot in the center left by the blower's rod
  2. a very clear optical glass with a low index of refraction

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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