alúmina
41alumina — n. Oxide of aluminum, argillaceous earth, argil …
42alumina — alu·mi·na …
43alumina — a•lu•mi•na [[t]əˈlu mə nə[/t]] n. chem. the natural or synthetic oxide of aluminum, Al2O3, occurring in nature in a pure crystal form as corundum • Etymology: 1780–90; < L alūmin , s. of alūmen alum I+ a III …
44alumina — /əˈlumənə / (say uh loohmuhnuh) noun 1. Mineralogy the oxide of aluminium, Al2O3, occurring widely in nature as corundum (in the ruby and sapphire, emery, etc.). 2. Obsolete aluminium. {New Latin, from Latin alūmen alum} …
45alumina — n. oxide of aluminium …
46alumina — A form of aluminum oxide used as a substrate for ceramic catalysts …
47alumina — n. the compound aluminium oxide occurring naturally as corundum and emery. Etymology: L alumen alum, after soda etc …
48alumina cement — a quick setting cement with a large bauxite content. * * * …
49alumina trihydrate — Chem. See aluminum hydroxide. * * * …
50Alumina hydrate lake — Лак, осаждённый на гидрате алюминия …