| Ha | absolution hypermetropia; hafnium; hamster; Hartmann number |
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| Hf | hafnium |
| hafnium | <chemical> Hafnium. A metal element of atomic number 72 and atomic weight 178.49, symbol hf. Chemical name: Hafnium (12 Dec 1998) |
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Synonyms :
| hafnium |
a grey tetravalent metallic element that resembles zirconium chemically and is found in zirconium minerals; used in filaments for its ready emission of electrons
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| hafnium | a gray tetravalent metallic element that resembles zirconium chemically and is found in zirconium minerals |
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