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Definition of Lutetium
1. Noun. A trivalent metallic element of the rare earth group; usually occurs in association with yttrium.
Definition of Lutetium
1. Noun. A metallic chemical element (''symbol'' Lu) with an atomic number of 71. ¹
¹ Source: wiktionary.com
Definition of Lutetium
1. a metallic element [n -S]
Medical Definition of Lutetium
1.