Ekaluminium \Ek*al`u*min"i*um\, n. [Skr. [=e]ka one + E. aluminium.] (Chem.) The name given by Mendeleev to a hypothetical element, -- later discovered and called {gallium}. See {Gallium}, and cf. {Ekabor}. Also see {periodic table}. [1913 Webster +PJC]