rare earth (redirected from Rare earth element)

rare earth

n.

1. Any of various oxides of the rare-earth elements.

2. A rare-earth element.

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rare earth

Noun

Chem

1. any oxide of a lanthanide

2. Also called: (rare-earth element) any element of the lanthanide series

Thesaurus

Noun

1.

rare earth - any element of the lanthanide series (atomic numbers 57 through 71) lanthanide, lanthanoid, lanthanon, rare-earth element group, grouping - any number of entities (members) considered as a unit terbium metal - a separate group of related lanthanides, including terbium, europium, gadolinium, and sometimes dysprosium