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hafnium

Flag: gbEnglishMerriam-Webster Dictionary
haf​ni​um
noun
haf·​ni·​um
ˈhaf-nē-əm

Definition

  • a metallic element that occurs especially in zirconium minerals and is used in control rods for nuclear reactors
    — see Chemical Elements Table
First Known Use
1923, in the meaning defined above
History and Etymology
New Latin, from Hafnia (Copenhagen), Denmark
haf​ni​um
noun
haf·​ni·​um
ˈhaf-nē-əm

Definition

  • a metallic element that occurs especially in zirconium minerals and is used in control rods for nuclear reactors
    — see Chemical Elements Table
First Known Use
1923, in the meaning defined above
History and Etymology
New Latin, from Hafnia (Copenhagen), Denmark