cover glass

American  

noun

1. a thin, round or square piece of glass used to cover an object mounted on a slide for microscopic observation.

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cover glass British  

noun

1. a thin square of mounted glass used to protect a photographic slide

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Etymology

Origin of cover glass

First recorded in 1880–85

Example Sentences

See Examples For:

cover glass

Mentioned in the news announcement was a commitment to buy cover glass for iPhones from Corning.

From Los Angeles Times ● Jul. 13, 2026

Specific figures Apple announced were a $2.5 billion commitment to make iPhone cover glass in Kentucky with longtime supplier Corning, and a $500 million partnership to produce rare-earth magnets in the U.S.

From The Wall Street Journal ● Nov. 1, 2025

"Applying protective cover glass layers on either side of the optical diffuser largely maintains the optical properties, yet protects against scratching," says Akira Saito, senior author.

From Science Daily ● Oct. 12, 2023

Meant to compete with flagships from Apple, Google, and Samsung, the OV1 will have a stainless steel and titanium housing, a ceramic back, Corning Victus cover glass, and a Qualcomm processor.

From The Verge ● Mar. 3, 2022

After bleaching and washing, the wings are dried by holding the slides over an alcohol flame, and a drop of glycerin is then applied and a cover glass put on at once.

From Directions for Collecting and Preserving Insects by Riley, C. V.