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A lustrous red, reddish-brown, or black mineral, TiO2, used as a gemstone, as an ore, and in paints and fillers.
[French, from German Rutil, from Latin rutilus, red; see rutilant.]
(Minerals) a black, yellowish, or reddish-brown mineral, found in igneous rocks, metamorphosed limestones, and quartz veins. It is a source of titanium. Composition: titanium dioxide. Formula: TiO2. Crystal structure: tetragonal
[C19: via French from German Rutil, from Latin rutilus red, glowing]
ru•tile(ˈru til, -taɪl)
a dark red, brilliant mineral, titanium dioxide, TiO2, occurring in needlelike crystals and granular masses: used to coat welding rods.
[1795–1805; < French < German Rutil < Latin rutilus red]
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|Noun||1.||rutile - a mineral consisting of titanium dioxide in crystalline form; occurs in metamorphic and plutonic rocks and is a major source of titanium|
atomic number 22, Ti, titanium - a light strong grey lustrous corrosion-resistant metallic element used in strong lightweight alloys (as for airplane parts); the main sources are rutile and ilmenite
mineral - solid homogeneous inorganic substances occurring in nature having a definite chemical composition