rare earth
noun
Definition of rare earth
1 : any of a group of similar oxides of metals or a mixture of such oxides occurring together in widely distributed but relatively scarce minerals
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First Known Use of rare earth
1875
Medical Dictionary
rare earth
play
noun
\ˌrer-ˈərth\
Medical Definition of rare earth
1: any of a group of similar oxides of metals or a mixture of such oxides occurring together in widely distributed but relatively scarce minerals
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