Beauxite \Beaux"ite\, n. (Min.) See {Bauxite}. Bauxite \Baux"ite\, Beauxite \Beaux"ite\,n. [F., fr. Baux or Beaux, near Arles.] (Min.) A ferruginous hydrate of alumina. It is largely used in the preparation of aluminium and alumina, and for the lining of furnaces which are exposed to intense heat.