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(lan-tha-num) 3 syllables

Definition

noun. a soft silvery-white metal that is part of the rare earth elements.

Example Sentence

Lanthanum is a chemical element with the symbol La and atomic number 57.

More Example Sentences

The scientist studied lanthanum for new uses.

Synonyms

rare earth metal; element 57; atomic number 57

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lanthanum
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Rhymes

  • lanthanum
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