calcium oxide

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Noun

calcium oxide (uncountable)

  1. (inorganic chemistry) A white powderous substance, CaO, normally made by heating calcium carbonate.
    • 2024 August 6, Ricardo Treviño, “Self-Healing Concrete Help Buildings Seal Themselves”, in TecScience[1], archived from the original on 19 January 2025:
      When calcium oxide is combined with CO2, it naturally forms calcium carbonate over time due to thermodynamic equilibrium, explains the researcher.

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