optical glass

noun

: flint or crown glass of well-defined characteristics used especially for making lenses

Examples of optical glass in a Sentence

Recent Examples on the Web
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Its researchers, engineers, and technicians had designed gunsight lenses for fighter planes in World War I. Before World War I, the best-quality optical glass came from Germany, and other nations regarded its creation as a trade secret, leading the US to engineer its industry on its own. — Kelsey D. Atherton, Popular Science, 20 July 2023 More lucrative was the manufacture of optical glass for telescopes and searchlights. — IEEE Spectrum, 31 May 2019

Word History

First Known Use

1797, in the meaning defined above

Time Traveler
The first known use of optical glass was in 1797

Rhymes for optical glass

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Browse Nearby Words

optical gage
optical glass
optical haze
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Cite this Entry

“Optical glass.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/optical%20glass. Accessed 28 Mar. 2025.

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Medical Definition

optical glass

noun
: flint or crown glass of well-defined characteristics used especially for making lenses
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