hafnium /ˈhafnēəm, ˈhæfniəm 
/ ▸ noun the chemical element of atomic number 72, a hard silver-gray metal of the transition series, resembling and often occurring with zirconium. (Symbol: Hf) – ORIGIN 1920s: modern Latin, from Hafnia, Latinized form of Danish Havn, former name of Copenhagen.
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