RARE EARTH

Pronunciation (US):

(GB):

 I. (noun) 

Sense 1

Meaning:

Any element of the lanthanide series (atomic numbers 57 through 71)

Synonyms:

lanthanide; lanthanoid; lanthanon; rare-earth element; rare earth

Classified under:

Nouns denoting substances

Hypernyms ("rare earth" is a kind of...):

group; grouping (any number of entities (members) considered as a unit)

Hyponyms (each of the following is a kind of "rare earth"):

terbium metal (a separate group of related lanthanides, including terbium, europium, gadolinium, and sometimes dysprosium)

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