Entry 1 sense Webster, 1913 Aluminium /(ăl`ū̇*mĭn"ĭ*ŭm)/ · Al·u·min·i·um · IPA /ˌæl.(j)ʊˈmɪn.i.əm/ 01 n. same as aluminum, chiefly British in usage. 1. same as aluminum, chiefly British in usage.(Chem.) See: aluminum Phrases & compounds Aluminium bronze [or] gold — a pale gold-colored alloy of aluminium and copper, used for journal bearings, etc.