rutile

[ roo-teel, -tahyl ]
/ ˈru til, -taɪl /

noun

a common mineral, titanium dioxide, TiO2, usually reddish-brown in color with a brilliant metallic or adamantine luster, occurring in crystals: used to coat welding rods.

Origin of rutile

1795–1805; < French < German Rutil < Latin rutilus red1
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Examples from the Web for rutile

British Dictionary definitions for rutile

rutile

/ (ˈruːtaɪl) /

noun

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: TiO 2 . Crystal structure: tetragonal

Word Origin for rutile

C19: via French from German Rutil, from Latin rutilus red, glowing
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Science definitions for rutile

rutile

[ rōōtēl′, -tīl′ ]

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.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.