alumina
Also found in: Thesaurus, Medical, Encyclopedia.
Related to alumina: Activated alumina
a·lu·mi·na
(ə-lo͞o′mə-nə)n.
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.
[New Latin alūmina, from Latin alūmen, alūmin-, alum.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
alumina
(əˈluːmɪnə)n
(Elements & Compounds) another name for aluminium oxide
[C18: from New Latin, plural of Latin alūmen alum]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
a•lu•mi•na
(əˈlu mə nə)n.
the natural or synthetic oxide of aluminum, Al2O3, occurring in nature in a pure crystal form as corundum.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Switch to new thesaurus
| Noun | 1. | alumina - any of various forms of aluminum oxide occurring naturally as corundum furnace lining, refractory - lining consisting of material with a high melting point; used to line the inside walls of a furnace alundum - a substance made of fused alumina |
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.