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rare-earth element

   Also found in: Medical, Encyclopedia, Wikipedia 0.01 sec.
rare-earth element (rârûrth)
n.
Any of the abundant metallic elements of atomic number 57 through 71. Also called lanthanide.

[So called because they were originally thought to be rare.]

rare-earth element  (rârûrth)
ThesaurusLegend:  Synonyms Related Words Antonyms
Noun1.rare-earth element - any element of the lanthanide series (atomic numbers 57 through 71)
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


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Thom Calandra provides a rare-earth element update from the Toronto Cambridge House Resource Show.
Optical fiber amplifier is a section of optical fiber that is doped with a rare-earth element such as erbium or praseodymium.
Department of Energy's Ames (Iowa) Laboratory have refined a process that makes it commercially viable to recover a valuable rare-earth element from tons of stockpiled magnetic scrap.
 
 
 
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