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optical glass

noun Optics.
  1. any of several types of high-quality, homogeneous, color-free glass, as flint or crown glass, having specified refractive properties, used in lenses and other components of optical systems.
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Origin of optical glass

First recorded in 1740–50
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for optical glass

Historical Examples of optical glass

  • You know, he was an optical-glass maker by profession, and the best we ever had.

    Reviews

    Oscar Wilde

  • You know he was an optical-glass maker by profession, and the best we have ever had.

  • This procedure is being repeated in the launching of an optical-glass industry; this trade has also been in Teutonic hands.

    The War After the War

    Isaac Frederick Marcosson

British Dictionary definitions for optical glass

optical glass

noun
  1. any of several types of clear homogeneous glass of known refractive index used in the construction of lenses, etcSee optical flint, optical crown
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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