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There are 3 thirteen-letter words ending with UMION

arsanylium␣ionchloronium␣ionfluoronium␣ion

4 definitions found

  • arsanylium␣ion — n. (Chemistry) the cation H2As+ derived from arsine. — n. (Chemistry) any organic derivative of this cation.
  • chloronium␣ion — n. (Chemistry) any halonium ion in which the halogen is chlorine.
  • fluoronium␣ion — n. (Chemistry) any halonium ion in which the halogen is fluorine.
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