Lanthanum
WordNet
noun
(1) A white soft metallic element that tarnishes readily; occurs in rare earth minerals and is usually classified as a rare earth
WiktionaryText
Noun
- A metallic chemical element (symbol La) with an atomic number of 57.
Related terms
- lanthana
- lanthanate
- lanthanide
- lanthanite
- lanthanoid
- lanthanon
Noun
lanthanum n
- lanthanum
- A part of lanthanum