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alumina
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The answer ALUMINA has 22 possible clue(s) in existing crosswords.
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Definitions of alumina in various dictionaries:
noun - any of various forms of aluminum oxide occurring naturally as corundum
noun - an oxide of aluminum
ALUMINA - Aluminium oxide (IUPAC name) or aluminum oxide (American English) is a chemical compound of aluminium and oxygen with the chemical formula Al2O3. It...
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Any of several forms of aluminum oxide, Al2O3, occurring naturally as corundum, in a hydrated form in bauxite, and with various impurities as ruby, sapphire, and emery, used in aluminum production and in abrasives, refractories, ceramics, and electrical insulation. Also called aluminum oxide. |
a white solid that is a major constituent of many rocks, especially clays, and is found crystallized as corundum, sapphire, and other minerals. |
any of various forms of aluminum oxide occurring naturally as corundum |
A white solid that is a major constituent of many rocks, especially clays, and is found crystallized as corundum, sapphire, and other minerals. |
Alumina description |
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Aluminium oxide (IUPAC name) or aluminum oxide (American English) is a chemical compound of aluminium and oxygen with the chemical formula Al2O3. It is the most commonly occurring of several aluminium oxides, and specifically identified as aluminium(III) oxide. It is commonly called alumina (regardless of whether the element is spelled aluminum or aluminium), and may also be called aloxide, aloxite, or alundum depending on particular forms or applications. It occurs naturally in its crystalline polymorphic phase -Al2O3 as the mineral corundum, varieties of which form the precious gemstones ruby and sapphire. Al2O3 is significant in its use to produce aluminium metal, as an abrasive owing to its hardness, and as a refractory material owing to its high melting point. |