English noun: silica | |||
1. | silica (substance) 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 | ||
Synonyms | silicon dioxide, silicon oxide | ||
Broader (hypernym) | oxide | ||
Narrower (hyponym) | chert, flint, silex | ||
Substance meronym | cristobalite, crystal, lechatelierite, quartz, quartz, quartz glass, tridymite, vitreous silica | ||