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

---

Etymology

Origin of borosilicate

First recorded in 1810–20; boro- + silicate

Example Sentences

Researchers from the University of Padua, Politecnico di Milano, and the CNR Institute for Photonics and Nanotechnologies have demonstrated a new approach using an unexpected material: 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

Made in two sizes of borosilicate glass, a material that was created for laboratory equipment, they’re produced in Hungary by Trendglas Jena.

From New York Times • Nov. 15, 2021

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

It is essentially a basic aluminium borosilicate, belonging to the orthorhombic system; it occurs usually in fibrous forms, of smalt-blue, greenish-blue, lavender or almost black colour, and exhibits strong pleochroism.

From Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 8 "Dubner" to "Dyeing" by Various