Library / English Dictionary

    RARE EARTH

    Pronunciation (US): Play  (GB): Play

     I. (noun) 

    Sense 1

    Meaning:

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

    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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