rare earth element

noun

Definition of rare earth element

: any of a series of metallic elements of which the oxides are classed as rare earths and which include the elements of the lanthanide series and sometimes yttrium and scandium called also rare earth metal

Recent Examples of rare earth element from the Web

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First Known Use of rare earth element

1924


Medical Dictionary

rare earth element

noun

medical Definition of rare earth element

: any of a series of metallic elements of which the oxides are classed as rare earths and which include the elements of the lanthanide series and sometimes yttrium and scandium called also rare earth metal

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