Definitions for hafniumˈhæf ni əm, ˈhɑf-
This page provides all possible meanings and translations of the word hafnium
Random House Webster's College Dictionary
haf•ni•umˈhæf ni əm, ˈhɑf-(n.)
a toxic metallic element found in most zirconium minerals.
Ref: Symbol: Hf 2
Origin of hafnium:
1923; < NL Hafn(ia) Copenhagen + -ium2
hafnium, Hf, atomic number 72(noun)
a grey tetravalent metallic element that resembles zirconium chemically and is found in zirconium minerals; used in filaments for its ready emission of electrons
a metallic chemical element (symbol Hf) with an atomic number of 72.
Origin: Hafnia, Copenhagen
Hafnium is a chemical element with the symbol Hf and atomic number 72. A lustrous, silvery gray, tetravalent transition metal, hafnium chemically resembles zirconium and is found in zirconium minerals. Its existence was predicted by Dmitri Mendeleev in 1869. Hafnium was the penultimate stable isotope element to be discovered. Hafnium is named after Hafnia, the Latin name for "Copenhagen", where it was discovered. Hafnium is used in filaments and electrodes. Some semiconductor fabrication processes use its oxide for integrated circuits at 45 nm and smaller feature lengths. Some superalloys used for special applications contain hafnium in combination with niobium, titanium, or tungsten. Hafnium's large neutron capture cross-section makes it a good material for neutron absorption in control rods in nuclear power plants, but at the same time requires that it be removed from the neutron-transparent corrosion-resistant zirconium alloys used in nuclear reactors.
U.S. National Library of Medicine
Hafnium. A metal element of atomic number 72 and atomic weight 178.49, symbol Hf. (From Dorland, 28th ed)
Find a translation for the hafnium definition in other languages:
Select another language: