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
Word origin
C19: via French from German Rutil, from Latin rutilus red, glowing
rutile in American English
(ˈruˌtil; ˈruˌtaɪl)
noun
a hard, reddish, tetragonal form of titanium dioxide, an ore of titanium
Word origin
< Fr or Ger: Fr < Ger rutil < L rutilus, red; akin to rufus, rubeus, red