LUTECIUM
lutetium, lutecium, Lu, atomic number
(noun) a trivalent metallic element of the rare earth group; usually occurs in association with yttrium
Source: WordNet® 3.1
Noun
lutecium (uncountable)
Obsolete form of lutetium.
Source: Wiktionary
Lu*te"ci*um, n. (Chem.)
Definition: A metallic element separated from ytterbium in 1907, by Urbain in Paris and by von Welsbach in Vienna. Symbol, Lu; at. wt. 174.0.
Source: Webster’s Unabridged Dictionary 1913 Edition
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21 April 2025
ENCYCLOPEDIA
(noun) a reference work (often in several volumes) containing articles on various topics (often arranged in alphabetical order) dealing with the entire range of human knowledge or with some particular specialty
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