ave basic oxides, form positive ions, and are good conductors of heat and electricityb. an alloy, such as brass or steel, containing one or more of these elements2. (Printing, Lithography & Bookbinding) printing type made of metal3. (Ceramics) the substance of glass in a molten state or as the finished product4. (Civil Engineering) short for road metal5. (Pop Music) short for heavy metal16. (Milit