Word.ws English Dictionary

actiniums

actiniums is the plural of actinium.

Meaning of actinium

Noun

actinium (usually uncountable, plural actiniums)

  1. (usually) A radioactive, metallic chemical element (symbol: Ac) with an atomic number of 89; found in uranium ores.
    1. (countable, usually) An atom of this element.

Questions about actiniums

What is actiniums the plural of?
Actiniums is the plural of actinium.

Words near actiniums in the dictionary

  1. actinium
  2. actinium emanation
  3. actinium K
  4. actinium series
  5. actinium-K
  6. actiniums
  7. actinizoa
  8. actinizoan
  9. actinizoans
  10. actino-
  11. actino-uranium

Source and license

Adapted from Wiktionary: actiniums (page history and authors); actinium (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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