Rutile
Pronunciation : Ru"tile
Part of Speech : n.
Etymology : [L. rutilus red, inclining to golden yellow.] (Min.)
Definition : Defn: 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.
Source : Webster's Unabridged Dictionary, 1913