Definition of alumina
: the oxide of aluminum Al2O3 occurring native as corundum and in hydrated forms (as in bauxite)
Recent Examples of alumina from the Web
Aluminum rose as China’s top state smelter suspends production capacity of intermediate material alumina.
Sales slightly exceeded expectations amid rising prices for aluminum and the feedstock alumina.
But by sealing the alumina cement compound along with titanium inside a glass tube and heating it to 1,100 degrees Celsius, the researchers were able to create a homogenized, symmetrical cage structure that conducts electricity like metal.
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Origin and Etymology of alumina
New Latin, from Latin alumin-, alumen alum
First Known Use: circa 1790See Words from the same year
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Britannica.com: Encyclopedia article about alumina
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