GNU Collaborative International Dictionary of English

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1.       
   Aluminous (ȧ‑lū‑mĭ‑nŭs), a. [L. aluminosus, fr.  alumen alum: cf. F. alumineux.] Pertaining to or containing alum, or alumina; as, “aluminous minerals, aluminous solution”.
   
   [1913 Webster]