rare earth element
Definition from Wiktionary, the free dictionary
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English [edit]
Noun [edit]
Wikipedia rare earth element (plural rare earth elements)
- (chemistry) Any of a group of seventeen soft, lustrous, sometimes magnetic metals that form trivalent salts; they include the lanthanides plus yttrium, scandium, thorium and sometimes zirconium.
Translations [edit]
type of metal
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