rutile Meaning, Definition & Usage

  1. noun a mineral consisting of titanium dioxide in crystalline form; occurs in metamorphic and plutonic rocks and is a major source of titanium

WordNet

Ru"tile noun
Etymology
L. rutilus red, inclining to golden yellow.
Definitions
  1. (Min.) A mineral usually of a reddish brown color, and brilliant metallic adamantine luster, occurring in tetragonal crystals. In composition it is titanium dioxide, like octahedrite and brooklite.

Webster 1913