silicious
51siliceous — [sə lish′əs] adj. [L siliceus] 1. of, containing, or like silica 2. growing in soil that has a large proportion of silica in it: Also sp. silicious …
52silica — n. silicon dioxide, occurring as quartz etc. and as a principal constituent of sandstone and other rocks. Phrases and idioms: silica gel hydrated silica in a hard granular form used as a desiccant. Derivatives: siliceous adj. (also silicious).… …
53silicon dioxide — noun 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 • Syn: ↑silica, ↑silicon oxide • Derivationally related forms: ↑silicious (for:… …
54silicon oxide — noun 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 • Syn: ↑silica, ↑silicon dioxide • Derivationally related forms: ↑silicious (for:… …
