Word Study
rutile
CIDE DICTIONARY
rutile, n. [L. rutilus red, inclining to golden yellow.].
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 brookite. [1913 Webster]
OXFORD DICTIONARY
rutile, n. a mineral form of titanium dioxide.
Etymology
F rutile or G Rutil f. L rutilus reddish
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