Dictionary
ru•tile
Pronunciation: (rOO'tēl, -tīl), [key]—
n.
a common mineral, titanium dioxide, TiO
2, usually reddish-brown in color with a brilliant metallic or adamantine luster, occurring in crystals: used to coat welding rods.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.