aluminate

from WordNet (r) 3.0 (2006)

aluminate
    n 1: a compound of alumina and a metallic oxide

from The Collaborative International Dictionary of English v.0.48

Aluminate \A*lu`mi*nate\, n. (Chem.)
   A compound formed from the hydrate of aluminium by the
   substitution of a metal for the hydrogen.
   [1913 Webster]