A white or colorless vitreous insoluble solid (SiO2); various forms occur widely in the earth's crust as quartz or cristobalite or tridymite or lechatelierite.

synoniemen: silicon dioxide, silicon oxide.

Nederlands: silicium dioxyde, kiezelzuur, siliciumdioxyde
Pools: krzemionka, ditlenek krzemu, dwutlenek krzemu