一种轻而韧的金属元素，有光泽、抗腐蚀，用于韧而轻的合金（如飞机部件）中，主要来自金红石和钛铁矿。

• a light strong gray lustrous corrosion-resistant metallic element used in strong light-weight alloys (as for airplane parts); the main sources are rutile and ilmenite.