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sulfur noun

  /ˈsʌl.fə/ , /ˈsʌl.fɚ/
  • (uncountable) A chemical element (symbol S) with an atomic number of 16, having a bright yellow color and characteristic smell, used commercially in a variety of products such as insecticides, black powder, and matchsticks.
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sulfuric adjective

  /sʌlˈfjuɹɪk/ , /sʌlˈfjʊəɹɪk/
  • (American spelling, chemistry) Of, or relating to sulfur, especially in its higher oxidation state
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