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Related to alumina: Activated alumina


(in pharmaceuticals) aluminum hydroxide.

a·lu·mi·num ox·ide

a compound of aluminum used as an abrasive, as a refractory, and in chromatography.
Synonym(s): alumina


/alu·mi·na/ (ah-loo´mĭ-nah)
2. (in pharmaceuticals) aluminum hydroxide.

hydrated alumina  aluminum hydroxide.


2 (in pharmaceuticals) aluminum hydroxide.


One of the strongest white ceramic materials used in dental practice; an abrasive employed to strengthen porcelain or as a substructure for all ceramic crowns and bridges.
[L. alumen, alum]

alumina (əlōōminə),

n aluminum oxide, an abrasive sometimes used as a polishing agent.


aluminum oxide.
References in periodicals archive ?
The deal is the first long-term agreement to supply Vietnamese alumina to the UAE and is expected to boost the bilateral trade between the two countries.
EGA engineers have been seconded to Ma'aden since the start of the year to gain experience on an operational refinery whilst construction of EGA's Al Taweelah alumina refinery continues, but the new group are the first women to participate in the programme.
The Al Taweelah alumina refinery is located next to EGA's Al Taweelah smelter, one of the largest single-site aluminium smelters in the world, in the Khalifa Industrial Zone in Abu Dhabi (KIZAD).
To address the Commission's competition concerns, Imerys offered to divest Alteo ARC's entire white fused alumina business and related businesses located in Alteo's plant in La Bthie, France.
The Bayer process: A common way to produce alumina, which extracts aluminum hydroxide (alumina) from bauxite as raw material, by utilizing sodium hydroxide (caustic soda).
At the end of June 2012, Bio-Clean announced it had signed an agreement to establish a joint venture with Kyrgyz Alumina in order to pursue the acquisition of mining, ore and mineral assets in eastern Europe and the US.
5Mt, and with the commencement of metallurgical work aimed at providing the basis for future alumina refinery process design and comparison of treatment options.
For this investigation, nanosized [gamma]-phase alumina powders with an average particle size of 48 nm (Nanophase Technology Corporation, Burr Ridge, IL) LOT#A-AGE1607 were used.
Moreover, business prospects for Alcoa Inc (NYSE:AA), which controls the remaining 60% in Alcoa World Alumina and Chemicals, has improved, lending stability to its BBB rating and having an overall positive effect on Alumina's credit profile.
PT Indonesia Chemical Alumina (ICA), which is owned 80% by Antam and 20%by SDK, will operate the plant.
Series of white hydrated alumina fire retardants/smoke suppressants in a range of particle sizes.
Tokyo, Japan, Sept 14, 2006 - (JCN) - Hitachi has developed a technology to create DRAM alumina insulating film with low leakage current in a short period of time.