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borosilicate

American  
[bawr-uh-sil-i-kit, -keyt, bohr-] / ˌbɔr əˈsɪl ɪ kɪt, -ˌkeɪt, ˌboʊr- /

noun

Chemistry.
  1. a salt of boric and silicic acids.


borosilicate British  
/ ˌbɔːrəʊˈsɪlɪkɪt, -ˌkeɪt /

noun

  1. a salt of boric and silicic acids

"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

Etymology

Origin of borosilicate

First recorded in 1810–20; boro- + silicate

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The team created a fully tunable heterodyne receiver, a key component for CV-QKD and CV-QRNG, by writing the optical circuit directly inside borosilicate glass.

From Science Daily • Mar. 24, 2026

This handmade glass candlestick made of colorful borosilicate glass is an elegant way to elevate the mood, on its own, or in pairs, illuminated by a candle or standing alone.

From Los Angeles Times • Dec. 1, 2022

Boric oxide is necessary for the production of heat-resistant borosilicate glass, like that shown in Figure 18.15 and certain optical glasses.

From Textbooks • Feb. 14, 2019

The Zyliss Fresh Glass Food Storage Containers are also made of borosilicate glass, but are more expensive than our current top pick.

From Slate • Sep. 7, 2018

A borosilicate of alumina, iron, and lime, commonly found in glassy, brown crystals with acute edges.

From Webster's Unabridged Dictionary (2nd 100 Pages) by Webster, Noah