Definition of lutetium noun from the Oxford Advanced Learner's Dictionary

 

lutetium

 noun
noun
BrE BrE//luːˈtiːʃiəm//
 
, also BrE//luːˈtiːsiəm//
 
; NAmE NAmE//luːˈtiːʃiəm//
 
[uncountable](symbol Lu)
 
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a chemical element. Lutetium is a rare silver-white metal used in the nuclear industry. Word Origin early 20th cent.: from French lutécium, from Latin Lutetia, the ancient name of Paris, the home of its discoverer.
See the Oxford Advanced American Dictionary entry: lutetium