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Chemical element
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Sample of antimony.


From Medieval Latin antimonium attested in the 11th century; see also the Wikipedia section.


  • (UK) IPA(key): /ˈæn.tɪ.mə.niː/, enPR: ăn'tĭmənē
  • (file)
  • (US) IPA(key): /ˈæn.tɪˌmoʊ.ni/, enPR: ăn'tĭmōnē


antimony (countable and uncountable, plural antimonies)

  1. A chemical element (symbol Sb, from Latin stibium) with an atomic number of 51: a lustrous gray metalloid.
    Synonym: stibium
    • 2021 December 27, Jack Healy, Mike Baker, “As Miners Chase Clean-Energy Minerals, Tribes Fear a Repeat of the Past”, in The New York Times[1], →ISSN:
      Deep in the Salmon River Mountains, an Idaho mining company, Perpetua Resources, is proposing a vast open-pit gold mine that would also produce 115 million pounds of antimony — an element that may be critical to manufacturing the high-capacity liquid-metal batteries of the future.
  2. The alloy stibnite.
    Synonym: stibium
    • 2005, Al Berlin, Chemical Physics of Pyrolysis, Combustion, and Oxidation, →ISBN, page 21:
      In quality synergistic additives in a composition use oxide antimonies.

Usage notes[edit]

  • Do not confuse with antinomy (contradiction or paradox).

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