First Known Use: circa 1790
Dictionary
alumina
noun alu·mi·na \ə-ˈlü-mə-nə\
Definition of ALUMINA
: the oxide of aluminum Al2O3 occurring native as corundum and in hydrated forms (as in bauxite)
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Origin of ALUMINA
New Latin, from Latin alumin-, alumen alum
Medical Dictionary
alumina
noun alu·mi·na \ə-ˈlü-mə-nə\
Medical Definition of ALUMINA
: an oxide of aluminum Al2O3 that occurs native as corundum and in hydrated forms (as in bauxite) and is used in antacids—called also aluminum oxide
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