Definition of alumina
:the oxide of aluminum Al2O3 occurring native as corundum and in hydrated forms (as in bauxite)
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Recent Examples of alumina from the Web
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In the smelting process, the raw material, alumina, is poured into large pots, bathed in caustic chemicals and fried with heavy electric current.
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Aluminum rose as China’s top state smelter suspends production capacity of intermediate material alumina.
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Sales slightly exceeded expectations amid rising prices for aluminum and the feedstock alumina.
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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
Medical Dictionary
Learn More about alumina
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Britannica.com: Encyclopedia article about alumina
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