rare earth

noun

Definition of rare earth

  1. 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

  2. 2 :  rare earth element

First Known Use of rare earth

1875


Medical Dictionary

rare earth

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noun \ˌrer-ˈərth\

Medical Definition of rare earth

  1. 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

  2. 2:  rare earth element

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