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Meaning of lanthanum in English
Pronunciation
/ˈlænθənəm/
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Noun
lanthanum
Etymology
mid 19th century: from Greek lanthanein‘escape notice’(because it was long undetected in cerium oxide) + -um
Definitions
1.
a white soft metallic element that tarnishes readily
Examples
« occurs in rare earth minerals and is usually classified as a rare earth »