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{%type%} Definitions

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Short "hint"

n. - Any of various forms of an oxide of a silvery ductile metallic element occurring naturally as corundum.

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Usage examples (33)
  • This oxide, called alumina, does not melt until a heat of 5,000°
  • Aluminum is made from alumina, which is produced from bauxite ore.
  • Bauxite is refined first into alumina, which is then made into aluminum.
  • Chinalco and Alcoa are both buyers of alumina, which is used to make aluminum.
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