borosilicate glass

noun

1. a glass containing 5 percent or more of B 2 O 3 , highly resistant to heat and shock, used especially in making cookware and chemical glassware.

borosilicate glass

noun

1. any of a range of heat- and chemical-resistant glasses, such as Pyrex, prepared by fusing together boron(III) oxide, silicon dioxide, and, usually, a metal oxide

Word History and Origins

Origin of borosilicate glass¹

First recorded in 1930–35