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Definition of Lanthanon
1. Noun. Any element of the lanthanide series (atomic numbers 57 through 71).
Exact synonyms: Lanthanide, Lanthanoid, Rare Earth, Rare-earth Element
Generic synonyms: Group, Grouping
Specialized synonyms: Terbium Metal
Generic synonyms: Group, Grouping
Specialized synonyms: Terbium Metal
Definition of Lanthanon
1. [n -S]