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tourmaline |
Grep of noun tourmaline tourmaline Overview of noun tourmaline The noun tourmaline has 1 sense (no senses from tagged texts) 1. 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) Overview of noun tourmaline The noun tourmaline has 1 sense (no senses from tagged texts) 1. 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)
tourmaline definition