Meaning Of The Word Rare earth

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Rare earth Meaning

Rare earth Definition
Rare earth Definition

What's The Definition Of Rare earth?

rare earth in American English
any of certain basic oxides much alike in physical and chemical properties; specif., any of the oxides of the rare-earth elements
noun: the oxide of any of the rare-earth elements contained in various minerals

rare earth in British English
noun: any oxide of a lanthanide

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