silex /sīˈleks/

1. Silica or quartz
2. A heat-resistant and shock-resistant glass formed of fused quartz

• superstrata
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• superstring theory
• superstrong
• superstruct
• superstructed
• superstructing
• superstruction
• superstructions
• superstructive
• superstructs
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• supersubstantial
• supersubtile
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• supersubtleties
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• supersymmetrical
• supersymmetries
• supersymmetry
• supertanker