e/Lucium

Information
has gloss	eng: Lucium was the proposed name for a new element found by the chemist Prosper Barrière in 1896 in the mineral monazite. But later William Crookes confirmed that the new element was only an impure sample of yttrium.
lexicalization	eng: Lucium
instance of	(noun) a silvery metallic element that is common in rare-earth minerals; used in magnesium and aluminum alloys Y, yttrium, atomic number 39