lanthanide (redirected from Lanthanoids)

lan·tha·nide  (lnth-nd)

n.

See rare-earth element.

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[lanthan(um) + -ide.]

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lanthanide [ˈlænθəˌnaɪd], lanthanon [ˈlænθəˌnɒn]

n

(Chemistry / Elements & Compounds) any element of the lanthanide series Also called rare earth rare-earth element

[from lanthanum + -ide]

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lanthanide  (lnth-nd)

Any of a series of 15 naturally occurring metallic elements. The lanthanides include elements having atomic numbers 57 (lanthanum) through 71 (lutetium). They are grouped apart from the rest of the elements in the Periodic Table because they all behave in a similar way in chemical reactions. Also called rare-earth element. See Periodic Table.

Thesaurus

Noun

1.

lanthanide - any element of the lanthanide series (atomic numbers 57 through 71) lanthanoid, lanthanon, rare earth, 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