Word.ws English Dictionary

lantanum

lantanum is the obsolete form of lanthanum.

Meaning of lanthanum

Noun

lanthanum (countable and uncountable, plural lanthanums)

  1. (uncountable) A chemical element (symbol La) with an atomic number of 57: a soft, ductile, silvery-white metal that tarnishes slowly when exposed to air.
  2. (countable) An atom of this element.

Questions about lantanum

What is lantanum the obsolete form of?
Lantanum is the obsolete form of lanthanum.

Words near lantanum in the dictionary

  1. lantakas
  2. lantana
  3. lantanas
  4. lantanium
  5. lantanoid
  6. lantanum
  7. lantanurate
  8. lantanuric acid
  9. Lantao
  10. Lantapan
  11. Lantau

Source and license

Adapted from Wiktionary: lantanum (page history and authors); lanthanum (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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Cite this entry: “lantanum.” Word.ws, https://word.ws/lantanum. Based on Wiktionary, CC BY-SA 4.0.