atomic number 13
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|Noun||1.||atomic number 13 - a silvery ductile metallic element found primarily in bauxite|
metal, metallic element - any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc.
potash alum, potassium alum, alum - a white crystalline double sulfate of aluminum: the potassium double sulfate of aluminum
alum, ammonia alum, ammonium alum - a white crystalline double sulfate of aluminum: the ammonium double sulfate of aluminum
bauxite - a clay-like mineral; the chief ore of aluminum; composed of aluminum oxides and aluminum hydroxides; used as an abrasive and catalyst
Duralumin - an aluminum-based alloy
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