alumina
[ uh-loo-muh-nuh ]
/ əˈlu mə nə /
noun
the natural or synthetic oxide of aluminum, Al2O3, occurring in nature in a pure crystal form as corundum.
Also called
aluminum oxide.
Words nearby alumina
alula,
alum,
alum rock,
alum.,
alumin-,
alumina,
alumina cement,
aluminate,
aluminated,
aluminiferous,
aluminite
Definition for aluminum oxide (2 of 2)
British Dictionary definitions for aluminum oxide
Word Origin for alumina
C18: from New Latin, plural of Latin
alūmen
alum
Scientific definitions for aluminum oxide (1 of 2)
alumina
[ ə-lōō′mə-nə ]
Any of several forms of aluminum oxide used in aluminum production and in abrasives, refractories, ceramics, and electrical insulation. Alumina occurs naturally as the mineral corundum and, with minor traces of chromium and cobalt, as the minerals ruby and sapphire, respectively. In its hydrated form it also occurs as the rock bauxite. Also called aluminum oxide. Chemical formula: Al2O3.
Scientific definitions for aluminum oxide (2 of 2)
aluminum oxide
See alumina.