silica

• Substance solide vitreuse, blanche ou incolore et insoluble, de formule SiO2, très répandue dans la croûte terrestre sous diverses formes telles que le quartz, la cristobalite, la tridymite et la léchatelierite.

A white or colorless vitreous insoluble solid (SiO2) that occurs widely in the earth's crust in various forms such as quartz, cristobalite, tridymite, and lechatelierite.

indénombrable

1. Chemical compoundC1formalscientific

   A white or colorless, hard, vitreous, insoluble solid (SiO2) that occurs widely in the earth's crust as quartz, cristobalite, tridymite, or lechatelierite.

   Silice

   • Silica is a major component of sand and many types of rocks.
   • The glass industry uses high-purity silica as a primary raw material.
   • Certain forms of silica, like quartz, are used in electronics.