lutetium
noun /luːˈtiːʃiəm/, /luːˈtiːsiəm/
/luːˈtiːʃiəm/
[uncountable] (symbol Lu)
- a chemical element. Lutetium is a rare silver-white metal used in the nuclear industry.Word Originearly 20th cent.: from French lutécium, from Latin Lutetia, the ancient name of Paris, the home of its discoverer.