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nouna salt of boric and silicic acidstype of:
Definition that contains borosilicate
- pyrex a borosilicate glass with a low coefficient of expansion; used for heat-resistant glassware in cooking and chemistry
- tourmaline a mineral that is a complex borosilicate and hydroxide of aluminum containing iron and magnesium and calcium and lithium and sodium; it is usually black but occurs in transparent colored forms that are used as gemstones