ti ‧ ta ‧ ni ‧ um /taɪˈteɪniəm/ BrE AmE noun [uncountable]
[ Date: 1700-1800 ; Language: Modern Latin ; Origin: Greek Titan ]
a strong light silver-white metal that is used to make aircraft and spacecraft, and is often combined with other metals. It is a chemical ↑ element : symbol Ti.