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1. barium_sulphate

noun. a white or colorless mineral (BaSO4); the main source of barium.

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2. sulphate

noun. ['ˈsʌlˌfeɪt'] a salt or ester of sulphuric acid.

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3. barium

noun. ['ˈbɛriːəm'] a soft silvery metallic element of the alkali earth group; found in barite.

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Etymology

  • barium (English)
  • -ium (English)
  • -um (Latin)
  • baryta (English)
  • βαρύς (Ancient Greek (to 1453))
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