frit

1. The fused or partially fused materials used in making glass.
2. A vitreous substance used in making porcelain, glazes, or enamels.

[Italian fritta, from feminine past participle of friggere, to fry, from Latin frīgere, to roast, fry.]

A partly or wholly fused porcelain that has been plunged into water while hot. The mass cracks and fractures, and from this “frit,” dental porcelain powders are made.

Small friable particles produced by quenching a molten glassy material.