A kind of heat-resistant borosilicate glass, made by mixing a high concentration of boron oxides into the molten glass to reduce its thermal expansion coefficient. / (by extension) Any borosilicate glass

Alternative form of pyrex

A brand of glassware produced by the Corning corporation, capable of resisting high temperatures, and suitable for cooking applications, currently made with tempered glass

(rare) feverish, pyretic

Relating to fever; feverish; pyrexial.

(medicine) Fever. / (medicine) Trench fever.

(obsolete) of or relating to fevers; feverish

plural of pyrexia

plural of pyrexia