Also found in: Dictionary, Thesaurus, Encyclopedia.
Related to alumina: Activated alumina


(in pharmaceuticals) aluminum hydroxide.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

a·lu·mi·num ox·ide

a compound of aluminum used as an abrasive, as a refractory, and in chromatography.
Synonym(s): alumina
Farlex Partner Medical Dictionary © Farlex 2012


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]
Medical Dictionary for the Dental Professions © Farlex 2012
References in periodicals archive ?
Alumina crucibles are gaining popularity across research institutes due to their properties.
'We expect a modest alumina surplus for the rest of 2019.
Since 31 December 2018, Alumina has received, or is due to receive, US$193.6 million of net distributions from AWAC1 entities which have been included in the final dividend.
EGA invested some $3.3 billion to develop the Al Taweelah alumina refinery, which is the first in the UAE and only the second in the Middle East.
Al Taweelah alumina refinery: transformative for EGA
Upon the achievement of full ramp-up, Al Taweelah alumina refinery is expected to produce two million tonnes of alumina per year, and meet 40% of EGA's requirements of the product, which it will use as feedstock for its aluminium smelters.
Neodymium and alumina are two of the most widely used materials in today's solid-state laser components.
Alumina (Al2O3) is extensively used as an adsorbent to remove metal ions, dyes and organic solvents from solutions because of its higher porosity, surface area and adsorption capacity [6].
EGA is currently building Al Taweelah alumina refinery with an investment of $3.3 billion (Dh12.1 billion) that is expected to commence production in the first half of 2019 and will convert bauxite into alumina for industrial use.
THC BioMed Intl Ltd has issued 483,870 units to Alumina at a price of USD0.31 per unit for gross proceeds of USD150,000 as part of the draw down facility.
Based on their tests, Szeles, Wright, Rajabipour and Stoffels concluded pure hydrated alumina forestalled ASR by reducing pH and alkalis in concrete pore solution, consuming and reducing dissolved Ca and portlandite, and most of all, reducing silica dissolution and damage to aggregates at high pH.