Definition of calcium oxide in English:

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calcium oxide

noun

A white caustic alkaline solid, commonly produced in the form of quicklime.
  • Chemical formula: CaO.
Example sentences
  • The dissociation of calcium carbonate to calcium oxide and carbon dioxide at 25°C and atmospheric pressure provides an example; raising the temperature or lowering the pressure drives the reaction in the forward direction.
  • By melting silica mixed with sodium hydroxide or calcium oxide one is able to interrupt the long chains of silicon-oxygen bonds to form more easily melted glasses.
  • Calcium carbide, made by reacting calcium oxide with carbon in the form of coke, is the starting material for the production of acetylene.

For editors and proofreaders

Syllabification: cal·ci·um ox·ide

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