 lanthanum |
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| 1. | [ noun ] (chemistry) a white soft metallic element that tarnishes readily; occurs in rare earth minerals and is usually classified as a rare earth | |
| Synonyms: | atomic_number_57 La | |
| Related terms: | metallic_element | |
| Similar spelling: |
lanthanon lanthanoid lanthanide Lanthanotus lantana |
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