Definitions for alumina
əˈlu mə nəalu·mi·na
This dictionary definitions page includes all the possible meanings, example usage and translations of the word alumina.
alumina, aluminum oxide, aluminium oxidenoun
any of various forms of aluminum oxide occurring naturally as corundum
Aluminum oxide used especially in mining, material sciences and ceramics.
Etymology: From (combining form of) alumen + -a.
Aluminium oxide 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 oxide. It is commonly called alumina and may also be called aloxide, aloxite, or alundum in various forms and applications. It occurs naturally in its crystalline polymorphic phase α-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.
Alumina, also known as aluminum oxide, is a white, crystalline substance that is commonly used in the production of aluminum. It is an inorganic compound with the chemical formula Al2O3, and it is also used as an abrasive due to its hardness and in the production of refractory materials due to its high melting point. Additionally, Alumina is used in ceramics and glass production, and it serves as a catalyst or a catalyst support in some industrial chemical processes.
one of the earths, consisting of two parts of aluminium and three of oxygen, Al2O3
Etymology: [L. alumen, aluminis. See Alum.]
Chambers 20th Century Dictionary
al-ū′min-a, Alumine, al′ū-min, n. one of the earths, the characteristic ingredient of common clay—the oxide of aluminium.—adj. Alū′minous, containing alum or alumina. [L. alumen, alum.]
The numerical value of alumina in Chaldean Numerology is: 3
The numerical value of alumina in Pythagorean Numerology is: 8
Alumina considers that Alcoa's demerger proposal triggers consent and 'first offer' rights in favor of Alumina under the AWAC arrangements. Alumina will vigorously defend the proceedings brought by Alcoa.
We had a number of cost efforts which did not kick in in the third quarter which will be reflected now. Also, we will get the benefit of lower alumina costs ... Our cost structure will be better in Q4 than in Q3.
Alumina considers that Alcoa's demerger proposal triggers consent and 'first offer' rights in favour of Alumina under the AWAC arrangements, alumina will vigorously defend the proceedings brought by Alcoa.
Traders go through all kinds of channels and make false product declarations at customs - marking it as alumina or even washing powder.
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"alumina." Definitions.net. STANDS4 LLC, 2023. Web. 3 Dec. 2023. <https://www.definitions.net/definition/alumina>.