| 释义 |
ru·tile
\ˈrüˌtēl, -tīl\ noun
(-s)
Etymology: German rutil, from Latin rutilis red — more at rutilant
1. : a mineral TiO2 that consists of titanium dioxide, is trimorphous with anatase and brookite, is usually of a reddish brown color but when deep red or black is sometimes cut into a gem, has a brilliant metallic or adamantine luster, occurs in tetragonal crystals which are commonly prismatic with striations and often geniculate as a result of twinning or occasionally occurs massive, and usually contains a little iron
2. : a synthetic gem in any of several colors and of the same composition as rutile that because of its dispersion and refractive power rivals the diamond in beauty |