a rare heavy polyvalent metallic element that resembles manganese chemically and is used in some alloys; is obtained as a by-product in refining molybdenum
A metallic chemical element (symbol Re) with an atomic number of 75: a heavy, silvery-gray transition metal.
The name rhenium comes from the Latin word Rhenus, meaning the Rhine River, combined with the suffix -ium. It was chosen to honor the river where the element was discovered.