rare earth elements
Identification code: 300380215
Hierarchy classification:
Alternative term/s
- elements, rare earth
- metals, rare earth
- rare earth element
- rare earth metal
- rare earth metals
- rare-earth element
- rare-earth elements
- rare-earth metal
- rare-earth metals
- REE
Anotations
Scope note:
Any of the group of metallic elements whose oxides are classed as rare earths. These include the lanthanide series, yttrium and scandium.
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