Rutile meaning

ro͝otēl, -tīl
A lustrous red, reddish-brown, or black mineral, TiO2 , used as a gemstone, as an ore, and in paints and fillers.
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A hard, reddish, tetragonal form of titanium dioxide, an ore of titanium.
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A lustrous red, reddish-brown, or black tetragonal mineral that is an ore of titanium. Rutile usually occurs as prismatic crystals in other minerals, especially as dark needlelike crystals in quartz. Chemical formula: TiO2.
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(mineralogy) The most frequent of the three polymorphs of titanium dioxide, crystalizing in the tetragonal system, TiO2.
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Origin of rutile

  • French from German Rutil from Latin rutilus red rutilant

    From American Heritage Dictionary of the English Language, 5th Edition

  • From Latin rutilus (“red") because of its common color, named in 1803.

    From Wiktionary