Term: silica: 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
Broader: oxide: any compound of oxygen with another element or a radical | Unrelated: book review: a critical review of a book (usually a recently published book)
Broader: oxide: any compound of oxygen with another element or a radical | Unrelated: respect: (usually preceded by `in') a detail or point
Broader: oxide: any compound of oxygen with another element or a radical | Unrelated: japanese plum: small tree of China and Japan bearing large yellow to red plums usually somewhat inferior to European plums in flavor
Broader: oxide: any compound of oxygen with another element or a radical | Unrelated: matrimony vine: any of various shrubs or vines of the genus Lycium with showy flowers and bright berries
Broader: oxide: any compound of oxygen with another element or a radical | Unrelated: sixth-former: a student in the sixth form
Broader: oxide: any compound of oxygen with another element or a radical | Unrelated: nickel-base alloy: an alloy whose main constituent is nickel
Broader: oxide: any compound of oxygen with another element or a radical | Unrelated: sundacarpus amara: a large fast-growing monoecious tropical evergreen tree having large glossy lanceolate leaves; of rain forests of Sumatra and Philippines to northern Queensland
Broader: oxide: any compound of oxygen with another element or a radical | Unrelated: domestic goat: any of various breeds of goat raised for milk or meat or wool
Broader: oxide: any compound of oxygen with another element or a radical | Unrelated: catapult: a device that launches aircraft from a warship
Broader: oxide: any compound of oxygen with another element or a radical | Unrelated: injection: any solution that is injected (as into the skin)