Tourmaline meaning

to͝or'mə-lĭn, -lēn'
A complex crystalline silicate containing aluminum, boron, and other elements, used in electronic instrumentation and, especially in its green, clear, and blue varieties, as a gemstone.
noun
0
0
A very hard, piezoelectric, rhombohedral mineral, (Na,Ca)(Mg,Fe,Al,Li)3Al6(BO3)3(Si6O18)(OH)4, of various colors, used as a gem and in making pressure gauges.
noun
0
0
Any of several minerals having the general chemical formula (Na,Ca)(Mg,Fe,Al,Li)3Al6(BO3)3Si6O18(OH)4 . Tourmaline occurs in many different translucent colors, usually in crystals shaped like 3-, 6-, or 9-sided prisms. It occurs in igneous and metamorphic rocks, especially in pegmatites.
0
0
A complex black or dark coloured borosilicate mineral.
noun
0
0
A transparent gemstone cut from it.
noun
0
0
Advertisement

Origin of tourmaline

  • French from Sinhalese toramalli carnelian
    From American Heritage Dictionary of the English Language, 5th Edition
  • Either directly from Sinhalese tóramalli 'carnelian', or via a cognate: German Turmalin, Portuguese tormalina, or French tourmaline
    From Wiktionary