What is the meaning of tourmaline?

noun

  • 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. .
WordNet 3.0 © 2006 by Princeton University
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APAWordNet. (2010). tourmaline. Retrieved September 20, 2026, from http://smartdefine.org/tourmaline/definitions/1249617
ChicagoWordNet. 2010. "tourmaline" http://smartdefine.org/tourmaline/definitions/1249617 (accessed September 20, 2026).
HarvardWordNet 2010, tourmaline, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/tourmaline/definitions/1249617>.
MLAWordNet. "tourmaline" 23 October 2010. Web. 20 September 2026. <http://smartdefine.org/tourmaline/definitions/1249617>
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