rutile

noun

ru·​tile ˈrü-ˌtēl 

: a reddish-brown to black mineral that consists of titanium dioxide usually with a little iron and has a brilliant metallic or adamantine luster

Example Sentences

Recent Examples on the Web

Titanium ores ilmenite and rutile are available in many countries, but the capability to turn them into titanium sponge—its purest form, which is mixed into alloys for industrial purposes—is far more limited. —Jon Sindreu, WSJ, 5 Aug. 2022

Choose from an assortment of colors, including satin white, rutile blue, blue-green satin matte, and Joe’s green. —Shelby Comroe, Marie Claire, 7 Dec. 2020

Titanium oxide is rare on Earth, found in minerals such as rutile, anatase, and brookite. —Jay Bennett, Popular Mechanics, 13 Sep. 2017

Word History

Etymology

German Rutil, from Latin rutilus

First Known Use

1805, in the meaning defined above