| lutecium | <chemical> Lutetium. An element of the rare earth family of metals. It has the atomic symbol lu, atomic number 71, and atomic weight 175. Chemical name: Lutetium (12 Dec 1998) |
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| lutecium |
lutetium: a trivalent metallic element of the rare earth group; usually occurs in association with yttrium
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| lutecium | a trivalent metallic element of the rare earth group |
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