Term: chert: variety of silica containing microcrystalline quartz
Broader: 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 | Unrelated: catawba: the Siouan language spoken by the Catawba
Broader: 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 | Unrelated: nicad: a rechargeable battery with a nickel cathode and a cadmium anode; often used in emergency systems because of its low discharge rate when not in use
Broader: 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 | Unrelated: factor: anything that contributes causally to a result
Broader: 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 | Unrelated: turnstile: a gate consisting of a post that acts as a pivot for rotating arms; set in a passageway for controlling the persons entering
Broader: 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 | Unrelated: swing: a sweeping blow or stroke
Broader: 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 | Unrelated: coontie: small tough woody zamia of Florida and West Indies and Cuba; roots and half-buried stems yield an arrowroot
Broader: 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 | Unrelated: bioterrorism: terrorism using the weapons of biological warfare
Broader: 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 | Unrelated: command: an authoritative direction or instruction to do something
Broader: 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 | Unrelated: lemon peel: the rind of a lemon
Broader: 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 | Unrelated: genus arethusa: genus of bog orchids of North America and Japan